Finding the Fourth Proportional to 2,478.71, 3,718.58 and 1,017.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.71 : 3,718.58 = 1,017.98 : x
2. Step 2: Convert to fraction form
   2,478.71/3,718.58 = 1,017.98/x
3. Step 3: Cross multiply
   2,478.71x = 3,718.58 × 1,017.98
4. Step 4: Simplify right side
   2,478.71x = 3,785,444.27
5. Step 5: Solve for x
   x = 3,785,444.27/2,478.71
6. Step 6: Final answer
   x = 1,527.19