Finding the Fourth Proportional to 1,361.55, 1,879.01 and 801.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.55 : 1,879.01 = 801.89 : x
2. Step 2: Convert to fraction form
   1,361.55/1,879.01 = 801.89/x
3. Step 3: Cross multiply
   1,361.55x = 1,879.01 × 801.89
4. Step 4: Simplify right side
   1,361.55x = 1,506,759.33
5. Step 5: Solve for x
   x = 1,506,759.33/1,361.55
6. Step 6: Final answer
   x = 1,106.65