Finding the Fourth Proportional to 876,390.72, 1,209,420 and 473,982.72

Step by Step Solution

1. Step 1: Write the proportion equation
   876,390.72 : 1,209,420 = 473,982.72 : x
2. Step 2: Convert to fraction form
   876,390.72/1,209,420 = 473,982.72/x
3. Step 3: Cross multiply
   876,390.72x = 1,209,420 × 473,982.72
4. Step 4: Simplify right side
   876,390.72x = 573,244,181,222.40
5. Step 5: Solve for x
   x = 573,244,181,222.40/876,390.72
6. Step 6: Final answer
   x = 654,096.59