Finding the Fourth Proportional to 2,010.53, 3,013.50 and 777.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.53 : 3,013.50 = 777.31 : x
2. Step 2: Convert to fraction form
   2,010.53/3,013.50 = 777.31/x
3. Step 3: Cross multiply
   2,010.53x = 3,013.50 × 777.31
4. Step 4: Simplify right side
   2,010.53x = 2,342,423.69
5. Step 5: Solve for x
   x = 2,342,423.69/2,010.53
6. Step 6: Final answer
   x = 1,165.08