Finding the Fourth Proportional to 1,417.15, 2,123.88 and 723.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.15 : 2,123.88 = 723.23 : x
2. Step 2: Convert to fraction form
   1,417.15/2,123.88 = 723.23/x
3. Step 3: Cross multiply
   1,417.15x = 2,123.88 × 723.23
4. Step 4: Simplify right side
   1,417.15x = 1,536,056.33
5. Step 5: Solve for x
   x = 1,536,056.33/1,417.15
6. Step 6: Final answer
   x = 1,083.90