Finding the Fourth Proportional to 876,798, 1,209,981.24 and 474,390

Step by Step Solution

1. Step 1: Write the proportion equation
   876,798 : 1,209,981.24 = 474,390 : x
2. Step 2: Convert to fraction form
   876,798/1,209,981.24 = 474,390/x
3. Step 3: Cross multiply
   876,798x = 1,209,981.24 × 474,390
4. Step 4: Simplify right side
   876,798x = 574,003,000,443.60
5. Step 5: Solve for x
   x = 574,003,000,443.60/876,798
6. Step 6: Final answer
   x = 654,658.20