Finding the Fourth Proportional to 1,048,143.30, 1,446,293.25 and 612,456.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048,143.30 : 1,446,293.25 = 612,456.15 : x
2. Step 2: Convert to fraction form
   1,048,143.30/1,446,293.25 = 612,456.15/x
3. Step 3: Cross multiply
   1,048,143.30x = 1,446,293.25 × 612,456.15
4. Step 4: Simplify right side
   1,048,143.30x = 885,791,185,372.24
5. Step 5: Solve for x
   x = 885,791,185,372.24/1,048,143.30
6. Step 6: Final answer
   x = 845,105.04