Finding the Fourth Proportional to 2,158,368.18, 2,978,529.81 and 1,191,477.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,368.18 : 2,978,529.81 = 1,191,477.71 : x
2. Step 2: Convert to fraction form
   2,158,368.18/2,978,529.81 = 1,191,477.71/x
3. Step 3: Cross multiply
   2,158,368.18x = 2,978,529.81 × 1,191,477.71
4. Step 4: Simplify right side
   2,158,368.18x = 3,548,851,866,760.93
5. Step 5: Solve for x
   x = 3,548,851,866,760.93/2,158,368.18
6. Step 6: Final answer
   x = 1,644,229.15