Finding the Fourth Proportional to 1,158.38, 1,598.56 and 634.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.38 : 1,598.56 = 634.42 : x
2. Step 2: Convert to fraction form
   1,158.38/1,598.56 = 634.42/x
3. Step 3: Cross multiply
   1,158.38x = 1,598.56 × 634.42
4. Step 4: Simplify right side
   1,158.38x = 1,014,152.85
5. Step 5: Solve for x
   x = 1,014,152.85/1,158.38
6. Step 6: Final answer
   x = 875.50