Finding the Fourth Proportional to 1,591,291.31, 2,196,404.39 and 979,956.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591,291.31 : 2,196,404.39 = 979,956.63 : x
2. Step 2: Convert to fraction form
   1,591,291.31/2,196,404.39 = 979,956.63/x
3. Step 3: Cross multiply
   1,591,291.31x = 2,196,404.39 × 979,956.63
4. Step 4: Simplify right side
   1,591,291.31x = 2,152,381,041,079.24
5. Step 5: Solve for x
   x = 2,152,381,041,079.24/1,591,291.31
6. Step 6: Final answer
   x = 1,352,600.27