Finding the Fourth Proportional to 2,155,824.63, 3,233,185.32 and 639,152.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,824.63 : 3,233,185.32 = 639,152.88 : x
2. Step 2: Convert to fraction form
   2,155,824.63/3,233,185.32 = 639,152.88/x
3. Step 3: Cross multiply
   2,155,824.63x = 3,233,185.32 × 639,152.88
4. Step 4: Simplify right side
   2,155,824.63x = 2,066,499,708,851.72
5. Step 5: Solve for x
   x = 2,066,499,708,851.72/2,155,824.63
6. Step 6: Final answer
   x = 958,565.78