Finding the Fourth Proportional to 1,158.89, 1,599.25 and 634.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.89 : 1,599.25 = 634.92 : x
2. Step 2: Convert to fraction form
   1,158.89/1,599.25 = 634.92/x
3. Step 3: Cross multiply
   1,158.89x = 1,599.25 × 634.92
4. Step 4: Simplify right side
   1,158.89x = 1,015,395.81
5. Step 5: Solve for x
   x = 1,015,395.81/1,158.89
6. Step 6: Final answer
   x = 876.18