Finding the Fourth Proportional to 2,663,580.69, 3,995,407.89 and 866,473.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663,580.69 : 3,995,407.89 = 866,473.56 : x
2. Step 2: Convert to fraction form
   2,663,580.69/3,995,407.89 = 866,473.56/x
3. Step 3: Cross multiply
   2,663,580.69x = 3,995,407.89 × 866,473.56
4. Step 4: Simplify right side
   2,663,580.69x = 3,461,915,298,100.39
5. Step 5: Solve for x
   x = 3,461,915,298,100.39/2,663,580.69
6. Step 6: Final answer
   x = 1,299,722.33