Finding the Fourth Proportional to 2,089.61, 2,883.66 and 1,145.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.61 : 2,883.66 = 1,145.46 : x
2. Step 2: Convert to fraction form
   2,089.61/2,883.66 = 1,145.46/x
3. Step 3: Cross multiply
   2,089.61x = 2,883.66 × 1,145.46
4. Step 4: Simplify right side
   2,089.61x = 3,303,111.46
5. Step 5: Solve for x
   x = 3,303,111.46/2,089.61
6. Step 6: Final answer
   x = 1,580.73