Finding the Fourth Proportional to 1,858.88, 2,788.72 and 704.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.88 : 2,788.72 = 704.63 : x
2. Step 2: Convert to fraction form
   1,858.88/2,788.72 = 704.63/x
3. Step 3: Cross multiply
   1,858.88x = 2,788.72 × 704.63
4. Step 4: Simplify right side
   1,858.88x = 1,965,000.07
5. Step 5: Solve for x
   x = 1,965,000.07/1,858.88
6. Step 6: Final answer
   x = 1,057.09