Finding the Fourth Proportional to 814,131.83, 1,219,656.31 and 543,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   814,131.83 : 1,219,656.31 = 543,443.76 : x
2. Step 2: Convert to fraction form
   814,131.83/1,219,656.31 = 543,443.76/x
3. Step 3: Cross multiply
   814,131.83x = 1,219,656.31 × 543,443.76
4. Step 4: Simplify right side
   814,131.83x = 662,814,609,655.52
5. Step 5: Solve for x
   x = 662,814,609,655.52/814,131.83
6. Step 6: Final answer
   x = 814,136.71