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Finding the Fourth Proportional to 1,869.59, 2,579.50 and 1,206.82

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Solution

The fourth proportional to 1,869.59, 2,579.50 and 1,206.82 is: 1,665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.59 : 2,579.50 = 1,206.82 : x
  2. Step 2: Convert to fraction form
    1,869.59/2,579.50 = 1,206.82/x
  3. Step 3: Cross multiply
    1,869.59x = 2,579.50 × 1,206.82
  4. Step 4: Simplify right side
    1,869.59x = 3,112,996.92
  5. Step 5: Solve for x
    x = 3,112,996.92/1,869.59
  6. Step 6: Final answer
    x = 1,665.07

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