Finding the Fourth Proportional to 1,360.78, 1,877.10 and 801.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.78 : 1,877.10 = 801.07 : x
2. Step 2: Convert to fraction form
   1,360.78/1,877.10 = 801.07/x
3. Step 3: Cross multiply
   1,360.78x = 1,877.10 × 801.07
4. Step 4: Simplify right side
   1,360.78x = 1,503,688.50
5. Step 5: Solve for x
   x = 1,503,688.50/1,360.78
6. Step 6: Final answer
   x = 1,105.02