Finding the Fourth Proportional to 1,865.78, 2,574.89 and 1,119.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.78 : 2,574.89 = 1,119.93 : x
2. Step 2: Convert to fraction form
   1,865.78/2,574.89 = 1,119.93/x
3. Step 3: Cross multiply
   1,865.78x = 2,574.89 × 1,119.93
4. Step 4: Simplify right side
   1,865.78x = 2,883,685.50
5. Step 5: Solve for x
   x = 2,883,685.50/1,865.78
6. Step 6: Final answer
   x = 1,545.56