Finding the Fourth Proportional to 1,480,111.89, 2,218,379.94 and 720,815.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480,111.89 : 2,218,379.94 = 720,815.55 : x
2. Step 2: Convert to fraction form
   1,480,111.89/2,218,379.94 = 720,815.55/x
3. Step 3: Cross multiply
   1,480,111.89x = 2,218,379.94 × 720,815.55
4. Step 4: Simplify right side
   1,480,111.89x = 1,599,042,756,560.07
5. Step 5: Solve for x
   x = 1,599,042,756,560.07/1,480,111.89
6. Step 6: Final answer
   x = 1,080,352.62