Finding the Fourth Proportional to 2,097.76, 3,147.55 and 799.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.76 : 3,147.55 = 799.60 : x
2. Step 2: Convert to fraction form
   2,097.76/3,147.55 = 799.60/x
3. Step 3: Cross multiply
   2,097.76x = 3,147.55 × 799.60
4. Step 4: Simplify right side
   2,097.76x = 2,516,780.98
5. Step 5: Solve for x
   x = 2,516,780.98/2,097.76
6. Step 6: Final answer
   x = 1,199.75