Finding the Fourth Proportional to 2,010.42, 3,013.53 and 693.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.42 : 3,013.53 = 693.78 : x
2. Step 2: Convert to fraction form
   2,010.42/3,013.53 = 693.78/x
3. Step 3: Cross multiply
   2,010.42x = 3,013.53 × 693.78
4. Step 4: Simplify right side
   2,010.42x = 2,090,726.84
5. Step 5: Solve for x
   x = 2,090,726.84/2,010.42
6. Step 6: Final answer
   x = 1,039.95