Finding the Fourth Proportional to 1,917.89, 2,875.01 and 1,222.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.89 : 2,875.01 = 1,222.61 : x
2. Step 2: Convert to fraction form
   1,917.89/2,875.01 = 1,222.61/x
3. Step 3: Cross multiply
   1,917.89x = 2,875.01 × 1,222.61
4. Step 4: Simplify right side
   1,917.89x = 3,514,995.49
5. Step 5: Solve for x
   x = 3,514,995.49/1,917.89
6. Step 6: Final answer
   x = 1,832.74