Finding the Fourth Proportional to 2,300.86, 3,451.27 and 657.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.86 : 3,451.27 = 657.40 : x
2. Step 2: Convert to fraction form
   2,300.86/3,451.27 = 657.40/x
3. Step 3: Cross multiply
   2,300.86x = 3,451.27 × 657.40
4. Step 4: Simplify right side
   2,300.86x = 2,268,861.61
5. Step 5: Solve for x
   x = 2,268,861.61/2,300.86
6. Step 6: Final answer
   x = 986.09