Finding the Fourth Proportional to 1,273.26, 1,754.72 and 993.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.26 : 1,754.72 = 993.05 : x
2. Step 2: Convert to fraction form
   1,273.26/1,754.72 = 993.05/x
3. Step 3: Cross multiply
   1,273.26x = 1,754.72 × 993.05
4. Step 4: Simplify right side
   1,273.26x = 1,742,522.21
5. Step 5: Solve for x
   x = 1,742,522.21/1,273.26
6. Step 6: Final answer
   x = 1,368.55