Finding the Fourth Proportional to 1,139.76, 1,710.72 and 563.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.76 : 1,710.72 = 563.04 : x
2. Step 2: Convert to fraction form
   1,139.76/1,710.72 = 563.04/x
3. Step 3: Cross multiply
   1,139.76x = 1,710.72 × 563.04
4. Step 4: Simplify right side
   1,139.76x = 963,203.79
5. Step 5: Solve for x
   x = 963,203.79/1,139.76
6. Step 6: Final answer
   x = 845.09