Finding the Fourth Proportional to 1,472.72, 2,197.69 and 1,309.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.72 : 2,197.69 = 1,309.10 : x
2. Step 2: Convert to fraction form
   1,472.72/2,197.69 = 1,309.10/x
3. Step 3: Cross multiply
   1,472.72x = 2,197.69 × 1,309.10
4. Step 4: Simplify right side
   1,472.72x = 2,876,995.98
5. Step 5: Solve for x
   x = 2,876,995.98/1,472.72
6. Step 6: Final answer
   x = 1,953.53