Finding the Fourth Proportional to 762.72, 1,050.64 and 706.72

Step by Step Solution

1. Step 1: Write the proportion equation
   762.72 : 1,050.64 = 706.72 : x
2. Step 2: Convert to fraction form
   762.72/1,050.64 = 706.72/x
3. Step 3: Cross multiply
   762.72x = 1,050.64 × 706.72
4. Step 4: Simplify right side
   762.72x = 742,508.30
5. Step 5: Solve for x
   x = 742,508.30/762.72
6. Step 6: Final answer
   x = 973.50