Finding the Fourth Proportional to 1,858.50, 2,787.89 and 704.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.50 : 2,787.89 = 704.25 : x
2. Step 2: Convert to fraction form
   1,858.50/2,787.89 = 704.25/x
3. Step 3: Cross multiply
   1,858.50x = 2,787.89 × 704.25
4. Step 4: Simplify right side
   1,858.50x = 1,963,368.01
5. Step 5: Solve for x
   x = 1,963,368.01/1,858.50
6. Step 6: Final answer
   x = 1,056.43