Finding the Fourth Proportional to 1,131.76, 1,569.55 and 1,060.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.76 : 1,569.55 = 1,060.48 : x
2. Step 2: Convert to fraction form
   1,131.76/1,569.55 = 1,060.48/x
3. Step 3: Cross multiply
   1,131.76x = 1,569.55 × 1,060.48
4. Step 4: Simplify right side
   1,131.76x = 1,664,476.38
5. Step 5: Solve for x
   x = 1,664,476.38/1,131.76
6. Step 6: Final answer
   x = 1,470.70