Finding the Fourth Proportional to 1,816.50, 2,506.74 and 1,019.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.50 : 2,506.74 = 1,019.86 : x
2. Step 2: Convert to fraction form
   1,816.50/2,506.74 = 1,019.86/x
3. Step 3: Cross multiply
   1,816.50x = 2,506.74 × 1,019.86
4. Step 4: Simplify right side
   1,816.50x = 2,556,523.86
5. Step 5: Solve for x
   x = 2,556,523.86/1,816.50
6. Step 6: Final answer
   x = 1,407.39