Finding the Fourth Proportional to 1,807.38, 2,494.53 and 1,145.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.38 : 2,494.53 = 1,145.07 : x
2. Step 2: Convert to fraction form
   1,807.38/2,494.53 = 1,145.07/x
3. Step 3: Cross multiply
   1,807.38x = 2,494.53 × 1,145.07
4. Step 4: Simplify right side
   1,807.38x = 2,856,411.47
5. Step 5: Solve for x
   x = 2,856,411.47/1,807.38
6. Step 6: Final answer
   x = 1,580.42