Finding the Fourth Proportional to 1,854,139.60, 2,780,673.72 and 842,698

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854,139.60 : 2,780,673.72 = 842,698 : x
2. Step 2: Convert to fraction form
   1,854,139.60/2,780,673.72 = 842,698/x
3. Step 3: Cross multiply
   1,854,139.60x = 2,780,673.72 × 842,698
4. Step 4: Simplify right side
   1,854,139.60x = 2,343,268,182,496.56
5. Step 5: Solve for x
   x = 2,343,268,182,496.56/1,854,139.60
6. Step 6: Final answer
   x = 1,263,803.54