Finding the Fourth Proportional to 2,906.64, 4,359.89 and 1,057.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.64 : 4,359.89 = 1,057.79 : x
2. Step 2: Convert to fraction form
   2,906.64/4,359.89 = 1,057.79/x
3. Step 3: Cross multiply
   2,906.64x = 4,359.89 × 1,057.79
4. Step 4: Simplify right side
   2,906.64x = 4,611,820.95
5. Step 5: Solve for x
   x = 4,611,820.95/2,906.64
6. Step 6: Final answer
   x = 1,586.65