Finding the Fourth Proportional to 1,993.80, 2,751.78 and 1,155.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993.80 : 2,751.78 = 1,155.01 : x
2. Step 2: Convert to fraction form
   1,993.80/2,751.78 = 1,155.01/x
3. Step 3: Cross multiply
   1,993.80x = 2,751.78 × 1,155.01
4. Step 4: Simplify right side
   1,993.80x = 3,178,333.42
5. Step 5: Solve for x
   x = 3,178,333.42/1,993.80
6. Step 6: Final answer
   x = 1,594.11