Finding the Fourth Proportional to 2,142,872.03, 2,956,321.61 and 1,224,608.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,872.03 : 2,956,321.61 = 1,224,608.56 : x
2. Step 2: Convert to fraction form
   2,142,872.03/2,956,321.61 = 1,224,608.56/x
3. Step 3: Cross multiply
   2,142,872.03x = 2,956,321.61 × 1,224,608.56
4. Step 4: Simplify right side
   2,142,872.03x = 3,620,336,740,797.42
5. Step 5: Solve for x
   x = 3,620,336,740,797.42/2,142,872.03
6. Step 6: Final answer
   x = 1,689,478.74