Finding the Fourth Proportional to 1,052.50, 1,452.18 and 632.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.50 : 1,452.18 = 632.72 : x
2. Step 2: Convert to fraction form
   1,052.50/1,452.18 = 632.72/x
3. Step 3: Cross multiply
   1,052.50x = 1,452.18 × 632.72
4. Step 4: Simplify right side
   1,052.50x = 918,823.33
5. Step 5: Solve for x
   x = 918,823.33/1,052.50
6. Step 6: Final answer
   x = 872.99