Finding the Fourth Proportional to 1,569.72, 2,352.72 and 876.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.72 : 2,352.72 = 876.36 : x
2. Step 2: Convert to fraction form
   1,569.72/2,352.72 = 876.36/x
3. Step 3: Cross multiply
   1,569.72x = 2,352.72 × 876.36
4. Step 4: Simplify right side
   1,569.72x = 2,061,829.70
5. Step 5: Solve for x
   x = 2,061,829.70/1,569.72
6. Step 6: Final answer
   x = 1,313.50