Finding the Fourth Proportional to 1,485,123.75, 2,227,328.82 and 685,637.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485,123.75 : 2,227,328.82 = 685,637.19 : x
2. Step 2: Convert to fraction form
   1,485,123.75/2,227,328.82 = 685,637.19/x
3. Step 3: Cross multiply
   1,485,123.75x = 2,227,328.82 × 685,637.19
4. Step 4: Simplify right side
   1,485,123.75x = 1,527,139,473,350.82
5. Step 5: Solve for x
   x = 1,527,139,473,350.82/1,485,123.75
6. Step 6: Final answer
   x = 1,028,291.06