Finding the Fourth Proportional to 1,204,402.72, 1,807,303.68 and 539,554.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204,402.72 : 1,807,303.68 = 539,554.72 : x
2. Step 2: Convert to fraction form
   1,204,402.72/1,807,303.68 = 539,554.72/x
3. Step 3: Cross multiply
   1,204,402.72x = 1,807,303.68 × 539,554.72
4. Step 4: Simplify right side
   1,204,402.72x = 975,139,231,017.37
5. Step 5: Solve for x
   x = 975,139,231,017.37/1,204,402.72
6. Step 6: Final answer
   x = 809,645.49