Finding the Fourth Proportional to 1,811.82, 2,499.71 and 1,148.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.82 : 2,499.71 = 1,148.58 : x
2. Step 2: Convert to fraction form
   1,811.82/2,499.71 = 1,148.58/x
3. Step 3: Cross multiply
   1,811.82x = 2,499.71 × 1,148.58
4. Step 4: Simplify right side
   1,811.82x = 2,871,111.17
5. Step 5: Solve for x
   x = 2,871,111.17/1,811.82
6. Step 6: Final answer
   x = 1,584.65