Finding the Fourth Proportional to 2,158,398.58, 2,978,614.18 and 1,191,529.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,398.58 : 2,978,614.18 = 1,191,529.38 : x
2. Step 2: Convert to fraction form
   2,158,398.58/2,978,614.18 = 1,191,529.38/x
3. Step 3: Cross multiply
   2,158,398.58x = 2,978,614.18 × 1,191,529.38
4. Step 4: Simplify right side
   2,158,398.58x = 3,549,106,307,154.61
5. Step 5: Solve for x
   x = 3,549,106,307,154.61/2,158,398.58
6. Step 6: Final answer
   x = 1,644,323.87