Finding the Fourth Proportional to 2,139.02, 3,207.33 and 1,472.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.02 : 3,207.33 = 1,472.70 : x
2. Step 2: Convert to fraction form
   2,139.02/3,207.33 = 1,472.70/x
3. Step 3: Cross multiply
   2,139.02x = 3,207.33 × 1,472.70
4. Step 4: Simplify right side
   2,139.02x = 4,723,434.89
5. Step 5: Solve for x
   x = 4,723,434.89/2,139.02
6. Step 6: Final answer
   x = 2,208.22