Finding the Fourth Proportional to 618,300.56, 927,443.48 and 348,449.06

Step by Step Solution

1. Step 1: Write the proportion equation
   618,300.56 : 927,443.48 = 348,449.06 : x
2. Step 2: Convert to fraction form
   618,300.56/927,443.48 = 348,449.06/x
3. Step 3: Cross multiply
   618,300.56x = 927,443.48 × 348,449.06
4. Step 4: Simplify right side
   618,300.56x = 323,166,802,429.67
5. Step 5: Solve for x
   x = 323,166,802,429.67/618,300.56
6. Step 6: Final answer
   x = 522,669.44