Finding the Fourth Proportional to 1,857.62, 2,784.78 and 704.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.62 : 2,784.78 = 704.18 : x
2. Step 2: Convert to fraction form
   1,857.62/2,784.78 = 704.18/x
3. Step 3: Cross multiply
   1,857.62x = 2,784.78 × 704.18
4. Step 4: Simplify right side
   1,857.62x = 1,960,993.34
5. Step 5: Solve for x
   x = 1,960,993.34/1,857.62
6. Step 6: Final answer
   x = 1,055.65