Finding the Fourth Proportional to 1,085.78, 1,498.50 and 737.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.78 : 1,498.50 = 737.18 : x
2. Step 2: Convert to fraction form
   1,085.78/1,498.50 = 737.18/x
3. Step 3: Cross multiply
   1,085.78x = 1,498.50 × 737.18
4. Step 4: Simplify right side
   1,085.78x = 1,104,664.23
5. Step 5: Solve for x
   x = 1,104,664.23/1,085.78
6. Step 6: Final answer
   x = 1,017.39