Finding the Fourth Proportional to 1,158.76, 1,737.06 and 1,061.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.76 : 1,737.06 = 1,061.56 : x
2. Step 2: Convert to fraction form
   1,158.76/1,737.06 = 1,061.56/x
3. Step 3: Cross multiply
   1,158.76x = 1,737.06 × 1,061.56
4. Step 4: Simplify right side
   1,158.76x = 1,843,993.41
5. Step 5: Solve for x
   x = 1,843,993.41/1,158.76
6. Step 6: Final answer
   x = 1,591.35