Finding the Fourth Proportional to 1,811.61, 2,499.03 and 1,181.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.61 : 2,499.03 = 1,181.34 : x
2. Step 2: Convert to fraction form
   1,811.61/2,499.03 = 1,181.34/x
3. Step 3: Cross multiply
   1,811.61x = 2,499.03 × 1,181.34
4. Step 4: Simplify right side
   1,811.61x = 2,952,204.10
5. Step 5: Solve for x
   x = 2,952,204.10/1,811.61
6. Step 6: Final answer
   x = 1,629.60