Finding the Fourth Proportional to 2,012.47, 3,019.33 and 902.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.47 : 3,019.33 = 902.81 : x
2. Step 2: Convert to fraction form
   2,012.47/3,019.33 = 902.81/x
3. Step 3: Cross multiply
   2,012.47x = 3,019.33 × 902.81
4. Step 4: Simplify right side
   2,012.47x = 2,725,889.99
5. Step 5: Solve for x
   x = 2,725,889.99/2,012.47
6. Step 6: Final answer
   x = 1,354.50