Finding the Fourth Proportional to 2,142,928.62, 3,214,410.95 and 545,491.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,928.62 : 3,214,410.95 = 545,491.98 : x
2. Step 2: Convert to fraction form
   2,142,928.62/3,214,410.95 = 545,491.98/x
3. Step 3: Cross multiply
   2,142,928.62x = 3,214,410.95 × 545,491.98
4. Step 4: Simplify right side
   2,142,928.62x = 1,753,435,395,012.91
5. Step 5: Solve for x
   x = 1,753,435,395,012.91/2,142,928.62
6. Step 6: Final answer
   x = 818,242.56