Finding the Fourth Proportional to 1,498.71, 2,247.15 and 718.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.71 : 2,247.15 = 718.95 : x
2. Step 2: Convert to fraction form
   1,498.71/2,247.15 = 718.95/x
3. Step 3: Cross multiply
   1,498.71x = 2,247.15 × 718.95
4. Step 4: Simplify right side
   1,498.71x = 1,615,588.49
5. Step 5: Solve for x
   x = 1,615,588.49/1,498.71
6. Step 6: Final answer
   x = 1,077.99