Finding the Fourth Proportional to 1,432, 2,148.72 and 662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432 : 2,148.72 = 662.72 : x
2. Step 2: Convert to fraction form
   1,432/2,148.72 = 662.72/x
3. Step 3: Cross multiply
   1,432x = 2,148.72 × 662.72
4. Step 4: Simplify right side
   1,432x = 1,423,999.72
5. Step 5: Solve for x
   x = 1,423,999.72/1,432
6. Step 6: Final answer
   x = 994.41