Finding the Fourth Proportional to 1,672.88, 2,309.52 and 1,299.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.88 : 2,309.52 = 1,299.04 : x
2. Step 2: Convert to fraction form
   1,672.88/2,309.52 = 1,299.04/x
3. Step 3: Cross multiply
   1,672.88x = 2,309.52 × 1,299.04
4. Step 4: Simplify right side
   1,672.88x = 3,000,158.86
5. Step 5: Solve for x
   x = 3,000,158.86/1,672.88
6. Step 6: Final answer
   x = 1,793.41