Finding the Fourth Proportional to 2,340.81, 3,510.86 and 697.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.81 : 3,510.86 = 697.10 : x
2. Step 2: Convert to fraction form
   2,340.81/3,510.86 = 697.10/x
3. Step 3: Cross multiply
   2,340.81x = 3,510.86 × 697.10
4. Step 4: Simplify right side
   2,340.81x = 2,447,416.55
5. Step 5: Solve for x
   x = 2,447,416.55/2,340.81
6. Step 6: Final answer
   x = 1,045.54