Finding the Fourth Proportional to 2,097.88, 3,147.08 and 799.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.88 : 3,147.08 = 799.72 : x
2. Step 2: Convert to fraction form
   2,097.88/3,147.08 = 799.72/x
3. Step 3: Cross multiply
   2,097.88x = 3,147.08 × 799.72
4. Step 4: Simplify right side
   2,097.88x = 2,516,782.82
5. Step 5: Solve for x
   x = 2,516,782.82/2,097.88
6. Step 6: Final answer
   x = 1,199.68