Finding the Fourth Proportional to 762.50, 1,052.34 and 667.10

Step by Step Solution

1. Step 1: Write the proportion equation
   762.50 : 1,052.34 = 667.10 : x
2. Step 2: Convert to fraction form
   762.50/1,052.34 = 667.10/x
3. Step 3: Cross multiply
   762.50x = 1,052.34 × 667.10
4. Step 4: Simplify right side
   762.50x = 702,016.01
5. Step 5: Solve for x
   x = 702,016.01/762.50
6. Step 6: Final answer
   x = 920.68