Finding the Fourth Proportional to 1,393.23, 2,090.17 and 1,146.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.23 : 2,090.17 = 1,146.83 : x
2. Step 2: Convert to fraction form
   1,393.23/2,090.17 = 1,146.83/x
3. Step 3: Cross multiply
   1,393.23x = 2,090.17 × 1,146.83
4. Step 4: Simplify right side
   1,393.23x = 2,397,060.64
5. Step 5: Solve for x
   x = 2,397,060.64/1,393.23
6. Step 6: Final answer
   x = 1,720.50