Finding the Fourth Proportional to 2,087,589.78, 2,880,825.01 and 1,228,205.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,589.78 : 2,880,825.01 = 1,228,205.30 : x
2. Step 2: Convert to fraction form
   2,087,589.78/2,880,825.01 = 1,228,205.30/x
3. Step 3: Cross multiply
   2,087,589.78x = 2,880,825.01 × 1,228,205.30
4. Step 4: Simplify right side
   2,087,589.78x = 3,538,244,528,179.91
5. Step 5: Solve for x
   x = 3,538,244,528,179.91/2,087,589.78
6. Step 6: Final answer
   x = 1,694,894.54