Finding the Fourth Proportional to 3,705.30, 5,115.15 and 2,906.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,705.30 : 5,115.15 = 2,906.82 : x
2. Step 2: Convert to fraction form
   3,705.30/5,115.15 = 2,906.82/x
3. Step 3: Cross multiply
   3,705.30x = 5,115.15 × 2,906.82
4. Step 4: Simplify right side
   3,705.30x = 14,868,820.32
5. Step 5: Solve for x
   x = 14,868,820.32/3,705.30
6. Step 6: Final answer
   x = 4,012.85