Finding the Fourth Proportional to 2,105.95, 3,159.02 and 807.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.95 : 3,159.02 = 807.32 : x
2. Step 2: Convert to fraction form
   2,105.95/3,159.02 = 807.32/x
3. Step 3: Cross multiply
   2,105.95x = 3,159.02 × 807.32
4. Step 4: Simplify right side
   2,105.95x = 2,550,340.03
5. Step 5: Solve for x
   x = 2,550,340.03/2,105.95
6. Step 6: Final answer
   x = 1,211.02