Finding the Fourth Proportional to 1,115,111.88, 1,538,861.76 and 605,814.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,115,111.88 : 1,538,861.76 = 605,814.12 : x
2. Step 2: Convert to fraction form
   1,115,111.88/1,538,861.76 = 605,814.12/x
3. Step 3: Cross multiply
   1,115,111.88x = 1,538,861.76 × 605,814.12
4. Step 4: Simplify right side
   1,115,111.88x = 932,264,182,936.05
5. Step 5: Solve for x
   x = 932,264,182,936.05/1,115,111.88
6. Step 6: Final answer
   x = 836,027.49