Finding the Fourth Proportional to 1,118.02, 1,541.86 and 698.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.02 : 1,541.86 = 698.41 : x
2. Step 2: Convert to fraction form
   1,118.02/1,541.86 = 698.41/x
3. Step 3: Cross multiply
   1,118.02x = 1,541.86 × 698.41
4. Step 4: Simplify right side
   1,118.02x = 1,076,850.44
5. Step 5: Solve for x
   x = 1,076,850.44/1,118.02
6. Step 6: Final answer
   x = 963.18