Finding the Fourth Proportional to 2,628,134.78, 3,939,111.41 and 1,187,136.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628,134.78 : 3,939,111.41 = 1,187,136.27 : x
2. Step 2: Convert to fraction form
   2,628,134.78/3,939,111.41 = 1,187,136.27/x
3. Step 3: Cross multiply
   2,628,134.78x = 3,939,111.41 × 1,187,136.27
4. Step 4: Simplify right side
   2,628,134.78x = 4,676,262,020,446.16
5. Step 5: Solve for x
   x = 4,676,262,020,446.16/2,628,134.78
6. Step 6: Final answer
   x = 1,779,308.30