Finding the Fourth Proportional to 1,268.54, 1,897.41 and 991.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.54 : 1,897.41 = 991.34 : x
2. Step 2: Convert to fraction form
   1,268.54/1,897.41 = 991.34/x
3. Step 3: Cross multiply
   1,268.54x = 1,897.41 × 991.34
4. Step 4: Simplify right side
   1,268.54x = 1,880,978.43
5. Step 5: Solve for x
   x = 1,880,978.43/1,268.54
6. Step 6: Final answer
   x = 1,482.79