Finding the Fourth Proportional to 1,744.66, 2,407.59 and 998.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,744.66 : 2,407.59 = 998.57 : x
2. Step 2: Convert to fraction form
   1,744.66/2,407.59 = 998.57/x
3. Step 3: Cross multiply
   1,744.66x = 2,407.59 × 998.57
4. Step 4: Simplify right side
   1,744.66x = 2,404,136.13
5. Step 5: Solve for x
   x = 2,404,136.13/1,744.66
6. Step 6: Final answer
   x = 1,378.00