Finding the Fourth Proportional to 1,148.03, 1,584.32 and 624.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148.03 : 1,584.32 = 624.10 : x
2. Step 2: Convert to fraction form
   1,148.03/1,584.32 = 624.10/x
3. Step 3: Cross multiply
   1,148.03x = 1,584.32 × 624.10
4. Step 4: Simplify right side
   1,148.03x = 988,768.59
5. Step 5: Solve for x
   x = 988,768.59/1,148.03
6. Step 6: Final answer
   x = 861.27