Finding the Fourth Proportional to 2,108,031.50, 3,162,134.74 and 612,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108,031.50 : 3,162,134.74 = 612,123.50 : x
2. Step 2: Convert to fraction form
   2,108,031.50/3,162,134.74 = 612,123.50/x
3. Step 3: Cross multiply
   2,108,031.50x = 3,162,134.74 × 612,123.50
4. Step 4: Simplify right side
   2,108,031.50x = 1,935,616,984,520.39
5. Step 5: Solve for x
   x = 1,935,616,984,520.39/2,108,031.50
6. Step 6: Final answer
   x = 918,210.66