Finding the Fourth Proportional to 2,136,978.72, 3,200,379.53 and 1,236,522.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136,978.72 : 3,200,379.53 = 1,236,522.78 : x
2. Step 2: Convert to fraction form
   2,136,978.72/3,200,379.53 = 1,236,522.78/x
3. Step 3: Cross multiply
   2,136,978.72x = 3,200,379.53 × 1,236,522.78
4. Step 4: Simplify right side
   2,136,978.72x = 3,957,342,187,308.08
5. Step 5: Solve for x
   x = 3,957,342,187,308.08/2,136,978.72
6. Step 6: Final answer
   x = 1,851,839.77