Finding the Fourth Proportional to 2,660,708, 3,991,096.56 and 887,780

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,708 : 3,991,096.56 = 887,780 : x
2. Step 2: Convert to fraction form
   2,660,708/3,991,096.56 = 887,780/x
3. Step 3: Cross multiply
   2,660,708x = 3,991,096.56 × 887,780
4. Step 4: Simplify right side
   2,660,708x = 3,543,215,704,036.80
5. Step 5: Solve for x
   x = 3,543,215,704,036.80/2,660,708
6. Step 6: Final answer
   x = 1,331,681.53