Finding the Fourth Proportional to 1,581,131.52, 2,181,958.80 and 855,978.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581,131.52 : 2,181,958.80 = 855,978.96 : x
2. Step 2: Convert to fraction form
   1,581,131.52/2,181,958.80 = 855,978.96/x
3. Step 3: Cross multiply
   1,581,131.52x = 2,181,958.80 × 855,978.96
4. Step 4: Simplify right side
   1,581,131.52x = 1,867,710,824,386.85
5. Step 5: Solve for x
   x = 1,867,710,824,386.85/1,581,131.52
6. Step 6: Final answer
   x = 1,181,249.50