Finding the Fourth Proportional to 1,952.72, 2,929.50 and 912.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,952.72 : 2,929.50 = 912.15 : x
2. Step 2: Convert to fraction form
   1,952.72/2,929.50 = 912.15/x
3. Step 3: Cross multiply
   1,952.72x = 2,929.50 × 912.15
4. Step 4: Simplify right side
   1,952.72x = 2,672,143.43
5. Step 5: Solve for x
   x = 2,672,143.43/1,952.72
6. Step 6: Final answer
   x = 1,368.42