Finding the Fourth Proportional to 1,811.89, 2,500.41 and 983.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.89 : 2,500.41 = 983.89 : x
2. Step 2: Convert to fraction form
   1,811.89/2,500.41 = 983.89/x
3. Step 3: Cross multiply
   1,811.89x = 2,500.41 × 983.89
4. Step 4: Simplify right side
   1,811.89x = 2,460,128.39
5. Step 5: Solve for x
   x = 2,460,128.39/1,811.89
6. Step 6: Final answer
   x = 1,357.77