Finding the Fourth Proportional to 624,100.56, 861,258 and 337,620

Step by Step Solution

1. Step 1: Write the proportion equation
   624,100.56 : 861,258 = 337,620 : x
2. Step 2: Convert to fraction form
   624,100.56/861,258 = 337,620/x
3. Step 3: Cross multiply
   624,100.56x = 861,258 × 337,620
4. Step 4: Simplify right side
   624,100.56x = 290,777,925,960
5. Step 5: Solve for x
   x = 290,777,925,960/624,100.56
6. Step 6: Final answer
   x = 465,915.18