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Finding the Fourth Proportional to 1,719.86, 2,579.79 and 679.82

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Solution

The fourth proportional to 1,719.86, 2,579.79 and 679.82 is: 1,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.86 : 2,579.79 = 679.82 : x
  2. Step 2: Convert to fraction form
    1,719.86/2,579.79 = 679.82/x
  3. Step 3: Cross multiply
    1,719.86x = 2,579.79 × 679.82
  4. Step 4: Simplify right side
    1,719.86x = 1,753,779.94
  5. Step 5: Solve for x
    x = 1,753,779.94/1,719.86
  6. Step 6: Final answer
    x = 1,019.73

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