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Finding the Fourth Proportional to 1,778.29, 2,665.91 and 997.65

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Solution

The fourth proportional to 1,778.29, 2,665.91 and 997.65 is: 1,495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.29 : 2,665.91 = 997.65 : x
  2. Step 2: Convert to fraction form
    1,778.29/2,665.91 = 997.65/x
  3. Step 3: Cross multiply
    1,778.29x = 2,665.91 × 997.65
  4. Step 4: Simplify right side
    1,778.29x = 2,659,647.61
  5. Step 5: Solve for x
    x = 2,659,647.61/1,778.29
  6. Step 6: Final answer
    x = 1,495.62

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