Finding the Fourth Proportional to 1,361.19, 1,878.87 and 801.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.19 : 1,878.87 = 801.62 : x
2. Step 2: Convert to fraction form
   1,361.19/1,878.87 = 801.62/x
3. Step 3: Cross multiply
   1,361.19x = 1,878.87 × 801.62
4. Step 4: Simplify right side
   1,361.19x = 1,506,139.77
5. Step 5: Solve for x
   x = 1,506,139.77/1,361.19
6. Step 6: Final answer
   x = 1,106.49