Finding the Fourth Proportional to 1,853.60, 2,778.72 and 699.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,853.60 : 2,778.72 = 699.04 : x
2. Step 2: Convert to fraction form
   1,853.60/2,778.72 = 699.04/x
3. Step 3: Cross multiply
   1,853.60x = 2,778.72 × 699.04
4. Step 4: Simplify right side
   1,853.60x = 1,942,436.43
5. Step 5: Solve for x
   x = 1,942,436.43/1,853.60
6. Step 6: Final answer
   x = 1,047.93