Finding the Fourth Proportional to 2,155,437, 3,233,704.68 and 639,175.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,437 : 3,233,704.68 = 639,175.32 : x
2. Step 2: Convert to fraction form
   2,155,437/3,233,704.68 = 639,175.32/x
3. Step 3: Cross multiply
   2,155,437x = 3,233,704.68 × 639,175.32
4. Step 4: Simplify right side
   2,155,437x = 2,066,904,223,624.50
5. Step 5: Solve for x
   x = 2,066,904,223,624.50/2,155,437
6. Step 6: Final answer
   x = 958,925.83