Finding the Fourth Proportional to 2,603,915.28, 3,905,678.52 and 806,812.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603,915.28 : 3,905,678.52 = 806,812.56 : x
2. Step 2: Convert to fraction form
   2,603,915.28/3,905,678.52 = 806,812.56/x
3. Step 3: Cross multiply
   2,603,915.28x = 3,905,678.52 × 806,812.56
4. Step 4: Simplify right side
   2,603,915.28x = 3,151,150,485,258.21
5. Step 5: Solve for x
   x = 3,151,150,485,258.21/2,603,915.28
6. Step 6: Final answer
   x = 1,210,158.61