Finding the Fourth Proportional to 2,089.66, 2,883.72 and 1,145.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.66 : 2,883.72 = 1,145.51 : x
2. Step 2: Convert to fraction form
   2,089.66/2,883.72 = 1,145.51/x
3. Step 3: Cross multiply
   2,089.66x = 2,883.72 × 1,145.51
4. Step 4: Simplify right side
   2,089.66x = 3,303,330.10
5. Step 5: Solve for x
   x = 3,303,330.10/2,089.66
6. Step 6: Final answer
   x = 1,580.80