Finding the Fourth Proportional to 2,098.51, 3,147.86 and 799.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.51 : 3,147.86 = 799.88 : x
2. Step 2: Convert to fraction form
   2,098.51/3,147.86 = 799.88/x
3. Step 3: Cross multiply
   2,098.51x = 3,147.86 × 799.88
4. Step 4: Simplify right side
   2,098.51x = 2,517,896.52
5. Step 5: Solve for x
   x = 2,517,896.52/2,098.51
6. Step 6: Final answer
   x = 1,199.85