Finding the Fourth Proportional to 1,636,865.31, 2,258,091.78 and 1,271,790.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,865.31 : 2,258,091.78 = 1,271,790.62 : x
2. Step 2: Convert to fraction form
   1,636,865.31/2,258,091.78 = 1,271,790.62/x
3. Step 3: Cross multiply
   1,636,865.31x = 2,258,091.78 × 1,271,790.62
4. Step 4: Simplify right side
   1,636,865.31x = 2,871,819,937,311.27
5. Step 5: Solve for x
   x = 2,871,819,937,311.27/1,636,865.31
6. Step 6: Final answer
   x = 1,754,463.19