Finding the Fourth Proportional to 2,171,290.71, 3,256,963.79 and 573,840

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171,290.71 : 3,256,963.79 = 573,840 : x
2. Step 2: Convert to fraction form
   2,171,290.71/3,256,963.79 = 573,840/x
3. Step 3: Cross multiply
   2,171,290.71x = 3,256,963.79 × 573,840
4. Step 4: Simplify right side
   2,171,290.71x = 1,868,976,099,998.38
5. Step 5: Solve for x
   x = 1,868,976,099,998.38/2,171,290.71
6. Step 6: Final answer
   x = 860,767.33