Finding the Fourth Proportional to 2,158,143.89, 2,978,457.10 and 1,853,229.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,143.89 : 2,978,457.10 = 1,853,229.72 : x
2. Step 2: Convert to fraction form
   2,158,143.89/2,978,457.10 = 1,853,229.72/x
3. Step 3: Cross multiply
   2,158,143.89x = 2,978,457.10 × 1,853,229.72
4. Step 4: Simplify right side
   2,158,143.89x = 5,519,765,212,831.94
5. Step 5: Solve for x
   x = 5,519,765,212,831.94/2,158,143.89
6. Step 6: Final answer
   x = 2,557,644.66