Finding the Fourth Proportional to 1,403, 2,104.78 and 1,142.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403 : 2,104.78 = 1,142.34 : x
2. Step 2: Convert to fraction form
   1,403/2,104.78 = 1,142.34/x
3. Step 3: Cross multiply
   1,403x = 2,104.78 × 1,142.34
4. Step 4: Simplify right side
   1,403x = 2,404,374.39
5. Step 5: Solve for x
   x = 2,404,374.39/1,403
6. Step 6: Final answer
   x = 1,713.74