Finding the Fourth Proportional to 2,158,621.71, 2,978,849.62 and 1,178,527.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,621.71 : 2,978,849.62 = 1,178,527.38 : x
2. Step 2: Convert to fraction form
   2,158,621.71/2,978,849.62 = 1,178,527.38/x
3. Step 3: Cross multiply
   2,158,621.71x = 2,978,849.62 × 1,178,527.38
4. Step 4: Simplify right side
   2,158,621.71x = 3,510,655,817,285.71
5. Step 5: Solve for x
   x = 3,510,655,817,285.71/2,158,621.71
6. Step 6: Final answer
   x = 1,626,341.39