Finding the Fourth Proportional to 1,359.44, 1,877.72 and 985.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.44 : 1,877.72 = 985.84 : x
2. Step 2: Convert to fraction form
   1,359.44/1,877.72 = 985.84/x
3. Step 3: Cross multiply
   1,359.44x = 1,877.72 × 985.84
4. Step 4: Simplify right side
   1,359.44x = 1,851,131.48
5. Step 5: Solve for x
   x = 1,851,131.48/1,359.44
6. Step 6: Final answer
   x = 1,361.69