Finding the Fourth Proportional to 1,653.72, 2,473.20 and 1,238.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,653.72 : 2,473.20 = 1,238.28 : x
2. Step 2: Convert to fraction form
   1,653.72/2,473.20 = 1,238.28/x
3. Step 3: Cross multiply
   1,653.72x = 2,473.20 × 1,238.28
4. Step 4: Simplify right side
   1,653.72x = 3,062,514.10
5. Step 5: Solve for x
   x = 3,062,514.10/1,653.72
6. Step 6: Final answer
   x = 1,851.89