Finding the Fourth Proportional to 1,515,890.73, 2,274,098.78 and 617,821.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,890.73 : 2,274,098.78 = 617,821.05 : x
2. Step 2: Convert to fraction form
   1,515,890.73/2,274,098.78 = 617,821.05/x
3. Step 3: Cross multiply
   1,515,890.73x = 2,274,098.78 × 617,821.05
4. Step 4: Simplify right side
   1,515,890.73x = 1,404,986,096,063.32
5. Step 5: Solve for x
   x = 1,404,986,096,063.32/1,515,890.73
6. Step 6: Final answer
   x = 926,838.64