Finding the Fourth Proportional to 2,231,134.88, 3,078,989.88 and 1,212,539.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,134.88 : 3,078,989.88 = 1,212,539.60 : x
2. Step 2: Convert to fraction form
   2,231,134.88/3,078,989.88 = 1,212,539.60/x
3. Step 3: Cross multiply
   2,231,134.88x = 3,078,989.88 × 1,212,539.60
4. Step 4: Simplify right side
   2,231,134.88x = 3,733,397,157,499.25
5. Step 5: Solve for x
   x = 3,733,397,157,499.25/2,231,134.88
6. Step 6: Final answer
   x = 1,673,317.55