Finding the Fourth Proportional to 1,410.18, 1,945.17 and 1,017.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.18 : 1,945.17 = 1,017.78 : x
2. Step 2: Convert to fraction form
   1,410.18/1,945.17 = 1,017.78/x
3. Step 3: Cross multiply
   1,410.18x = 1,945.17 × 1,017.78
4. Step 4: Simplify right side
   1,410.18x = 1,979,755.12
5. Step 5: Solve for x
   x = 1,979,755.12/1,410.18
6. Step 6: Final answer
   x = 1,403.90