Finding the Fourth Proportional to 1,158.42, 1,598.62 and 634.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.42 : 1,598.62 = 634.50 : x
2. Step 2: Convert to fraction form
   1,158.42/1,598.62 = 634.50/x
3. Step 3: Cross multiply
   1,158.42x = 1,598.62 × 634.50
4. Step 4: Simplify right side
   1,158.42x = 1,014,324.39
5. Step 5: Solve for x
   x = 1,014,324.39/1,158.42
6. Step 6: Final answer
   x = 875.61