Finding the Fourth Proportional to 1,811.30, 2,498.71 and 1,181.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.30 : 2,498.71 = 1,181.54 : x
2. Step 2: Convert to fraction form
   1,811.30/2,498.71 = 1,181.54/x
3. Step 3: Cross multiply
   1,811.30x = 2,498.71 × 1,181.54
4. Step 4: Simplify right side
   1,811.30x = 2,952,325.81
5. Step 5: Solve for x
   x = 2,952,325.81/1,811.30
6. Step 6: Final answer
   x = 1,629.95