Finding the Fourth Proportional to 1,744.52, 2,407.58 and 998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,744.52 : 2,407.58 = 998.72 : x
2. Step 2: Convert to fraction form
   1,744.52/2,407.58 = 998.72/x
3. Step 3: Cross multiply
   1,744.52x = 2,407.58 × 998.72
4. Step 4: Simplify right side
   1,744.52x = 2,404,481.27
5. Step 5: Solve for x
   x = 2,404,481.27/1,744.52
6. Step 6: Final answer
   x = 1,378.31