Finding the Fourth Proportional to 3,705.20, 5,113.15 and 2,026.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,705.20 : 5,113.15 = 2,026.61 : x
2. Step 2: Convert to fraction form
   3,705.20/5,113.15 = 2,026.61/x
3. Step 3: Cross multiply
   3,705.20x = 5,113.15 × 2,026.61
4. Step 4: Simplify right side
   3,705.20x = 10,362,335.36
5. Step 5: Solve for x
   x = 10,362,335.36/3,705.20
6. Step 6: Final answer
   x = 2,796.70