Finding the Fourth Proportional to 1,691.88, 2,334.52 and 1,019.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691.88 : 2,334.52 = 1,019.54 : x
2. Step 2: Convert to fraction form
   1,691.88/2,334.52 = 1,019.54/x
3. Step 3: Cross multiply
   1,691.88x = 2,334.52 × 1,019.54
4. Step 4: Simplify right side
   1,691.88x = 2,380,136.52
5. Step 5: Solve for x
   x = 2,380,136.52/1,691.88
6. Step 6: Final answer
   x = 1,406.80