Finding the Fourth Proportional to 1,839.50, 2,538.57 and 1,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.50 : 2,538.57 = 1,011.50 : x
2. Step 2: Convert to fraction form
   1,839.50/2,538.57 = 1,011.50/x
3. Step 3: Cross multiply
   1,839.50x = 2,538.57 × 1,011.50
4. Step 4: Simplify right side
   1,839.50x = 2,567,763.56
5. Step 5: Solve for x
   x = 2,567,763.56/1,839.50
6. Step 6: Final answer
   x = 1,395.90