Finding the Fourth Proportional to 1,581,298.10, 2,182,164.78 and 856,139.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581,298.10 : 2,182,164.78 = 856,139.96 : x
2. Step 2: Convert to fraction form
   1,581,298.10/2,182,164.78 = 856,139.96/x
3. Step 3: Cross multiply
   1,581,298.10x = 2,182,164.78 × 856,139.96
4. Step 4: Simplify right side
   1,581,298.10x = 1,868,238,467,462.61
5. Step 5: Solve for x
   x = 1,868,238,467,462.61/1,581,298.10
6. Step 6: Final answer
   x = 1,181,458.74