Finding the Fourth Proportional to 1,436.58, 1,978.02 and 1,083

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.58 : 1,978.02 = 1,083 : x
2. Step 2: Convert to fraction form
   1,436.58/1,978.02 = 1,083/x
3. Step 3: Cross multiply
   1,436.58x = 1,978.02 × 1,083
4. Step 4: Simplify right side
   1,436.58x = 2,142,195.66
5. Step 5: Solve for x
   x = 2,142,195.66/1,436.58
6. Step 6: Final answer
   x = 1,491.18