Finding the Fourth Proportional to 2,142,269.85, 2,956,332.15 and 1,224,518.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,269.85 : 2,956,332.15 = 1,224,518.61 : x
2. Step 2: Convert to fraction form
   2,142,269.85/2,956,332.15 = 1,224,518.61/x
3. Step 3: Cross multiply
   2,142,269.85x = 2,956,332.15 × 1,224,518.61
4. Step 4: Simplify right side
   2,142,269.85x = 3,620,083,735,016.31
5. Step 5: Solve for x
   x = 3,620,083,735,016.31/2,142,269.85
6. Step 6: Final answer
   x = 1,689,835.54