Finding the Fourth Proportional to 1,917.27, 2,877.12 and 1,097.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.27 : 2,877.12 = 1,097.15 : x
2. Step 2: Convert to fraction form
   1,917.27/2,877.12 = 1,097.15/x
3. Step 3: Cross multiply
   1,917.27x = 2,877.12 × 1,097.15
4. Step 4: Simplify right side
   1,917.27x = 3,156,617.82
5. Step 5: Solve for x
   x = 3,156,617.82/1,917.27
6. Step 6: Final answer
   x = 1,646.41