Finding the Fourth Proportional to 1,396,159.56, 2,093,039.90 and 485,223.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,159.56 : 2,093,039.90 = 485,223.67 : x
2. Step 2: Convert to fraction form
   1,396,159.56/2,093,039.90 = 485,223.67/x
3. Step 3: Cross multiply
   1,396,159.56x = 2,093,039.90 × 485,223.67
4. Step 4: Simplify right side
   1,396,159.56x = 1,015,592,499,308.31
5. Step 5: Solve for x
   x = 1,015,592,499,308.31/1,396,159.56
6. Step 6: Final answer
   x = 727,418.65