Finding the Fourth Proportional to 647,888.04, 972,112.72 and 348,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   647,888.04 : 972,112.72 = 348,018.72 : x
2. Step 2: Convert to fraction form
   647,888.04/972,112.72 = 348,018.72/x
3. Step 3: Cross multiply
   647,888.04x = 972,112.72 × 348,018.72
4. Step 4: Simplify right side
   647,888.04x = 338,313,424,510.12
5. Step 5: Solve for x
   x = 338,313,424,510.12/647,888.04
6. Step 6: Final answer
   x = 522,178.84