Finding the Fourth Proportional to 2,172,667.10, 3,258,984.45 and 656,347.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,667.10 : 3,258,984.45 = 656,347.10 : x
2. Step 2: Convert to fraction form
   2,172,667.10/3,258,984.45 = 656,347.10/x
3. Step 3: Cross multiply
   2,172,667.10x = 3,258,984.45 × 656,347.10
4. Step 4: Simplify right side
   2,172,667.10x = 2,139,024,992,702.60
5. Step 5: Solve for x
   x = 2,139,024,992,702.60/2,172,667.10
6. Step 6: Final answer
   x = 984,515.76