Finding the Fourth Proportional to 2,799.98, 4,191.86 and 2,109.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.98 : 4,191.86 = 2,109.56 : x
2. Step 2: Convert to fraction form
   2,799.98/4,191.86 = 2,109.56/x
3. Step 3: Cross multiply
   2,799.98x = 4,191.86 × 2,109.56
4. Step 4: Simplify right side
   2,799.98x = 8,842,948.67
5. Step 5: Solve for x
   x = 8,842,948.67/2,799.98
6. Step 6: Final answer
   x = 3,158.22