Finding the Fourth Proportional to 749,901.31, 1,124,846.49 and 300,615.58

Step by Step Solution

1. Step 1: Write the proportion equation
   749,901.31 : 1,124,846.49 = 300,615.58 : x
2. Step 2: Convert to fraction form
   749,901.31/1,124,846.49 = 300,615.58/x
3. Step 3: Cross multiply
   749,901.31x = 1,124,846.49 × 300,615.58
4. Step 4: Simplify right side
   749,901.31x = 338,146,380,002.31
5. Step 5: Solve for x
   x = 338,146,380,002.31/749,901.31
6. Step 6: Final answer
   x = 450,921.18