Finding the Fourth Proportional to 1,528.50, 2,287.56 and 943.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.50 : 2,287.56 = 943.89 : x
2. Step 2: Convert to fraction form
   1,528.50/2,287.56 = 943.89/x
3. Step 3: Cross multiply
   1,528.50x = 2,287.56 × 943.89
4. Step 4: Simplify right side
   1,528.50x = 2,159,205.01
5. Step 5: Solve for x
   x = 2,159,205.01/1,528.50
6. Step 6: Final answer
   x = 1,412.63