Finding the Fourth Proportional to 1,085.73, 1,498.32 and 607.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.73 : 1,498.32 = 607.20 : x
2. Step 2: Convert to fraction form
   1,085.73/1,498.32 = 607.20/x
3. Step 3: Cross multiply
   1,085.73x = 1,498.32 × 607.20
4. Step 4: Simplify right side
   1,085.73x = 909,779.90
5. Step 5: Solve for x
   x = 909,779.90/1,085.73
6. Step 6: Final answer
   x = 837.94