Finding the Fourth Proportional to 2,301.89, 3,450.76 and 840.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,301.89 : 3,450.76 = 840.01 : x
2. Step 2: Convert to fraction form
   2,301.89/3,450.76 = 840.01/x
3. Step 3: Cross multiply
   2,301.89x = 3,450.76 × 840.01
4. Step 4: Simplify right side
   2,301.89x = 2,898,672.91
5. Step 5: Solve for x
   x = 2,898,672.91/2,301.89
6. Step 6: Final answer
   x = 1,259.26