Finding the Fourth Proportional to 1,811.14, 2,498.76 and 1,147.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.14 : 2,498.76 = 1,147.89 : x
2. Step 2: Convert to fraction form
   1,811.14/2,498.76 = 1,147.89/x
3. Step 3: Cross multiply
   1,811.14x = 2,498.76 × 1,147.89
4. Step 4: Simplify right side
   1,811.14x = 2,868,301.62
5. Step 5: Solve for x
   x = 2,868,301.62/1,811.14
6. Step 6: Final answer
   x = 1,583.70