Finding the Fourth Proportional to 2,215,632.69, 3,322,117.82 and 866,188.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,632.69 : 3,322,117.82 = 866,188.05 : x
2. Step 2: Convert to fraction form
   2,215,632.69/3,322,117.82 = 866,188.05/x
3. Step 3: Cross multiply
   2,215,632.69x = 3,322,117.82 × 866,188.05
4. Step 4: Simplify right side
   2,215,632.69x = 2,877,578,752,045.11
5. Step 5: Solve for x
   x = 2,877,578,752,045.11/2,215,632.69
6. Step 6: Final answer
   x = 1,298,761.64