Finding the Fourth Proportional to 1,516, 2,091.27 and 1,017.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,516 : 2,091.27 = 1,017.78 : x
2. Step 2: Convert to fraction form
   1,516/2,091.27 = 1,017.78/x
3. Step 3: Cross multiply
   1,516x = 2,091.27 × 1,017.78
4. Step 4: Simplify right side
   1,516x = 2,128,452.78
5. Step 5: Solve for x
   x = 2,128,452.78/1,516
6. Step 6: Final answer
   x = 1,403.99