Finding the Fourth Proportional to 1,374.91, 2,059.97 and 1,145.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.91 : 2,059.97 = 1,145.27 : x
2. Step 2: Convert to fraction form
   1,374.91/2,059.97 = 1,145.27/x
3. Step 3: Cross multiply
   1,374.91x = 2,059.97 × 1,145.27
4. Step 4: Simplify right side
   1,374.91x = 2,359,221.27
5. Step 5: Solve for x
   x = 2,359,221.27/1,374.91
6. Step 6: Final answer
   x = 1,715.91