Finding the Fourth Proportional to 1,086.83, 1,498.64 and 807.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.83 : 1,498.64 = 807.58 : x
2. Step 2: Convert to fraction form
   1,086.83/1,498.64 = 807.58/x
3. Step 3: Cross multiply
   1,086.83x = 1,498.64 × 807.58
4. Step 4: Simplify right side
   1,086.83x = 1,210,269.53
5. Step 5: Solve for x
   x = 1,210,269.53/1,086.83
6. Step 6: Final answer
   x = 1,113.58