Finding the Fourth Proportional to 1,522.29, 2,282.63 and 781.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.29 : 2,282.63 = 781.61 : x
2. Step 2: Convert to fraction form
   1,522.29/2,282.63 = 781.61/x
3. Step 3: Cross multiply
   1,522.29x = 2,282.63 × 781.61
4. Step 4: Simplify right side
   1,522.29x = 1,784,111.11
5. Step 5: Solve for x
   x = 1,784,111.11/1,522.29
6. Step 6: Final answer
   x = 1,171.99