Finding the Fourth Proportional to 1,591,422.56, 2,196,191.16 and 866,291.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591,422.56 : 2,196,191.16 = 866,291.12 : x
2. Step 2: Convert to fraction form
   1,591,422.56/2,196,191.16 = 866,291.12/x
3. Step 3: Cross multiply
   1,591,422.56x = 2,196,191.16 × 866,291.12
4. Step 4: Simplify right side
   1,591,422.56x = 1,902,540,899,730.50
5. Step 5: Solve for x
   x = 1,902,540,899,730.50/1,591,422.56
6. Step 6: Final answer
   x = 1,195,497.00