Finding the Fourth Proportional to 1,085.73, 1,498.45 and 787.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.73 : 1,498.45 = 787.93 : x
2. Step 2: Convert to fraction form
   1,085.73/1,498.45 = 787.93/x
3. Step 3: Cross multiply
   1,085.73x = 1,498.45 × 787.93
4. Step 4: Simplify right side
   1,085.73x = 1,180,673.71
5. Step 5: Solve for x
   x = 1,180,673.71/1,085.73
6. Step 6: Final answer
   x = 1,087.45