Finding the Fourth Proportional to 2,250,131.73, 3,105,189.98 and 1,217,639.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250,131.73 : 3,105,189.98 = 1,217,639.40 : x
2. Step 2: Convert to fraction form
   2,250,131.73/3,105,189.98 = 1,217,639.40/x
3. Step 3: Cross multiply
   2,250,131.73x = 3,105,189.98 × 1,217,639.40
4. Step 4: Simplify right side
   2,250,131.73x = 3,781,001,658,045.01
5. Step 5: Solve for x
   x = 3,781,001,658,045.01/2,250,131.73
6. Step 6: Final answer
   x = 1,680,346.80