Finding the Fourth Proportional to 1,887.71, 2,606.57 and 1,180.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.71 : 2,606.57 = 1,180.38 : x
2. Step 2: Convert to fraction form
   1,887.71/2,606.57 = 1,180.38/x
3. Step 3: Cross multiply
   1,887.71x = 2,606.57 × 1,180.38
4. Step 4: Simplify right side
   1,887.71x = 3,076,743.10
5. Step 5: Solve for x
   x = 3,076,743.10/1,887.71
6. Step 6: Final answer
   x = 1,629.88