Finding the Fourth Proportional to 1,389,854.72, 1,918,003.20 and 753,950.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,854.72 : 1,918,003.20 = 753,950.72 : x
2. Step 2: Convert to fraction form
   1,389,854.72/1,918,003.20 = 753,950.72/x
3. Step 3: Cross multiply
   1,389,854.72x = 1,918,003.20 × 753,950.72
4. Step 4: Simplify right side
   1,389,854.72x = 1,446,079,893,602.30
5. Step 5: Solve for x
   x = 1,446,079,893,602.30/1,389,854.72
6. Step 6: Final answer
   x = 1,040,453.99