Finding the Fourth Proportional to 2,158,414.62, 2,978,618.64 and 1,178,355.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,414.62 : 2,978,618.64 = 1,178,355.27 : x
2. Step 2: Convert to fraction form
   2,158,414.62/2,978,618.64 = 1,178,355.27/x
3. Step 3: Cross multiply
   2,158,414.62x = 2,978,618.64 × 1,178,355.27
4. Step 4: Simplify right side
   2,158,414.62x = 3,509,870,971,764.23
5. Step 5: Solve for x
   x = 3,509,870,971,764.23/2,158,414.62
6. Step 6: Final answer
   x = 1,626,133.80