Finding the Fourth Proportional to 2,328,878, 3,493,317 and 645,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328,878 : 3,493,317 = 645,981.50 : x
2. Step 2: Convert to fraction form
   2,328,878/3,493,317 = 645,981.50/x
3. Step 3: Cross multiply
   2,328,878x = 3,493,317 × 645,981.50
4. Step 4: Simplify right side
   2,328,878x = 2,256,618,155,635.50
5. Step 5: Solve for x
   x = 2,256,618,155,635.50/2,328,878
6. Step 6: Final answer
   x = 968,972.25