Finding the Fourth Proportional to 1,139.43, 1,706.49 and 592.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.43 : 1,706.49 = 592.05 : x
2. Step 2: Convert to fraction form
   1,139.43/1,706.49 = 592.05/x
3. Step 3: Cross multiply
   1,139.43x = 1,706.49 × 592.05
4. Step 4: Simplify right side
   1,139.43x = 1,010,327.40
5. Step 5: Solve for x
   x = 1,010,327.40/1,139.43
6. Step 6: Final answer
   x = 886.70