Finding the Fourth Proportional to 1,360.51, 1,877.39 and 800.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.51 : 1,877.39 = 800.89 : x
2. Step 2: Convert to fraction form
   1,360.51/1,877.39 = 800.89/x
3. Step 3: Cross multiply
   1,360.51x = 1,877.39 × 800.89
4. Step 4: Simplify right side
   1,360.51x = 1,503,582.88
5. Step 5: Solve for x
   x = 1,503,582.88/1,360.51
6. Step 6: Final answer
   x = 1,105.16