Finding the Fourth Proportional to 904,978.48, 1,247,991.37 and 611,274.10

Step by Step Solution

1. Step 1: Write the proportion equation
   904,978.48 : 1,247,991.37 = 611,274.10 : x
2. Step 2: Convert to fraction form
   904,978.48/1,247,991.37 = 611,274.10/x
3. Step 3: Cross multiply
   904,978.48x = 1,247,991.37 × 611,274.10
4. Step 4: Simplify right side
   904,978.48x = 762,864,801,504.52
5. Step 5: Solve for x
   x = 762,864,801,504.52/904,978.48
6. Step 6: Final answer
   x = 842,964.58