Finding the Fourth Proportional to 1,165.59, 1,608.49 and 634.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165.59 : 1,608.49 = 634.49 : x
2. Step 2: Convert to fraction form
   1,165.59/1,608.49 = 634.49/x
3. Step 3: Cross multiply
   1,165.59x = 1,608.49 × 634.49
4. Step 4: Simplify right side
   1,165.59x = 1,020,565.80
5. Step 5: Solve for x
   x = 1,020,565.80/1,165.59
6. Step 6: Final answer
   x = 875.58