Finding the Fourth Proportional to 1,158.76, 1,599.54 and 693.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.76 : 1,599.54 = 693.16 : x
2. Step 2: Convert to fraction form
   1,158.76/1,599.54 = 693.16/x
3. Step 3: Cross multiply
   1,158.76x = 1,599.54 × 693.16
4. Step 4: Simplify right side
   1,158.76x = 1,108,737.15
5. Step 5: Solve for x
   x = 1,108,737.15/1,158.76
6. Step 6: Final answer
   x = 956.83