Finding the Fourth Proportional to 1,921.89, 2,649.38 and 1,360.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.89 : 2,649.38 = 1,360.62 : x
2. Step 2: Convert to fraction form
   1,921.89/2,649.38 = 1,360.62/x
3. Step 3: Cross multiply
   1,921.89x = 2,649.38 × 1,360.62
4. Step 4: Simplify right side
   1,921.89x = 3,604,799.42
5. Step 5: Solve for x
   x = 3,604,799.42/1,921.89
6. Step 6: Final answer
   x = 1,875.65