Finding the Fourth Proportional to 2,146.51, 3,220.86 and 1,626.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.51 : 3,220.86 = 1,626.31 : x
2. Step 2: Convert to fraction form
   2,146.51/3,220.86 = 1,626.31/x
3. Step 3: Cross multiply
   2,146.51x = 3,220.86 × 1,626.31
4. Step 4: Simplify right side
   2,146.51x = 5,238,116.83
5. Step 5: Solve for x
   x = 5,238,116.83/2,146.51
6. Step 6: Final answer
   x = 2,440.29