Finding the Fourth Proportional to 647,888.54, 972,113.47 and 348,019.22

Step by Step Solution

1. Step 1: Write the proportion equation
   647,888.54 : 972,113.47 = 348,019.22 : x
2. Step 2: Convert to fraction form
   647,888.54/972,113.47 = 348,019.22/x
3. Step 3: Cross multiply
   647,888.54x = 972,113.47 × 348,019.22
4. Step 4: Simplify right side
   647,888.54x = 338,314,171,580.89
5. Step 5: Solve for x
   x = 338,314,171,580.89/647,888.54
6. Step 6: Final answer
   x = 522,179.59