Finding the Fourth Proportional to 1,931.01, 2,664.81 and 1,145.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.01 : 2,664.81 = 1,145.58 : x
2. Step 2: Convert to fraction form
   1,931.01/2,664.81 = 1,145.58/x
3. Step 3: Cross multiply
   1,931.01x = 2,664.81 × 1,145.58
4. Step 4: Simplify right side
   1,931.01x = 3,052,753.04
5. Step 5: Solve for x
   x = 3,052,753.04/1,931.01
6. Step 6: Final answer
   x = 1,580.91