Finding the Fourth Proportional to 1,407.58, 1,940.89 and 1,151.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.58 : 1,940.89 = 1,151.27 : x
2. Step 2: Convert to fraction form
   1,407.58/1,940.89 = 1,151.27/x
3. Step 3: Cross multiply
   1,407.58x = 1,940.89 × 1,151.27
4. Step 4: Simplify right side
   1,407.58x = 2,234,483.41
5. Step 5: Solve for x
   x = 2,234,483.41/1,407.58
6. Step 6: Final answer
   x = 1,587.47