Finding the Fourth Proportional to 1,138,997.11, 1,571,818.83 and 622,784.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,997.11 : 1,571,818.83 = 622,784.35 : x
2. Step 2: Convert to fraction form
   1,138,997.11/1,571,818.83 = 622,784.35/x
3. Step 3: Cross multiply
   1,138,997.11x = 1,571,818.83 × 622,784.35
4. Step 4: Simplify right side
   1,138,997.11x = 978,904,168,359.31
5. Step 5: Solve for x
   x = 978,904,168,359.31/1,138,997.11
6. Step 6: Final answer
   x = 859,443.94