Finding the Fourth Proportional to 1,874.88, 2,812.72 and 704.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.88 : 2,812.72 = 704.70 : x
2. Step 2: Convert to fraction form
   1,874.88/2,812.72 = 704.70/x
3. Step 3: Cross multiply
   1,874.88x = 2,812.72 × 704.70
4. Step 4: Simplify right side
   1,874.88x = 1,982,123.78
5. Step 5: Solve for x
   x = 1,982,123.78/1,874.88
6. Step 6: Final answer
   x = 1,057.20