Finding the Fourth Proportional to 1,917.77, 2,874.39 and 1,096.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.77 : 2,874.39 = 1,096.61 : x
2. Step 2: Convert to fraction form
   1,917.77/2,874.39 = 1,096.61/x
3. Step 3: Cross multiply
   1,917.77x = 2,874.39 × 1,096.61
4. Step 4: Simplify right side
   1,917.77x = 3,152,070.45
5. Step 5: Solve for x
   x = 3,152,070.45/1,917.77
6. Step 6: Final answer
   x = 1,643.62