Finding the Fourth Proportional to 1,139,137.35, 1,571,992.27 and 622,892.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,137.35 : 1,571,992.27 = 622,892.89 : x
2. Step 2: Convert to fraction form
   1,139,137.35/1,571,992.27 = 622,892.89/x
3. Step 3: Cross multiply
   1,139,137.35x = 1,571,992.27 × 622,892.89
4. Step 4: Simplify right side
   1,139,137.35x = 979,182,808,117.96
5. Step 5: Solve for x
   x = 979,182,808,117.96/1,139,137.35
6. Step 6: Final answer
   x = 859,582.74