Finding the Fourth Proportional to 2,300.86, 3,451.31 and 840.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.86 : 3,451.31 = 840.01 : x
2. Step 2: Convert to fraction form
   2,300.86/3,451.31 = 840.01/x
3. Step 3: Cross multiply
   2,300.86x = 3,451.31 × 840.01
4. Step 4: Simplify right side
   2,300.86x = 2,899,134.91
5. Step 5: Solve for x
   x = 2,899,134.91/2,300.86
6. Step 6: Final answer
   x = 1,260.02