Finding the Fourth Proportional to 1,047.72, 1,569.56 and 560.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.72 : 1,569.56 = 560.10 : x
2. Step 2: Convert to fraction form
   1,047.72/1,569.56 = 560.10/x
3. Step 3: Cross multiply
   1,047.72x = 1,569.56 × 560.10
4. Step 4: Simplify right side
   1,047.72x = 879,110.56
5. Step 5: Solve for x
   x = 879,110.56/1,047.72
6. Step 6: Final answer
   x = 839.07