Finding the Fourth Proportional to 825,851.34, 1,237,940.55 and 559,638.90

Step by Step Solution

1. Step 1: Write the proportion equation
   825,851.34 : 1,237,940.55 = 559,638.90 : x
2. Step 2: Convert to fraction form
   825,851.34/1,237,940.55 = 559,638.90/x
3. Step 3: Cross multiply
   825,851.34x = 1,237,940.55 × 559,638.90
4. Step 4: Simplify right side
   825,851.34x = 692,799,687,667.40
5. Step 5: Solve for x
   x = 692,799,687,667.40/825,851.34
6. Step 6: Final answer
   x = 838,891.52