Finding the Fourth Proportional to 2,117.34, 3,174.93 and 1,240.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.34 : 3,174.93 = 1,240.10 : x
2. Step 2: Convert to fraction form
   2,117.34/3,174.93 = 1,240.10/x
3. Step 3: Cross multiply
   2,117.34x = 3,174.93 × 1,240.10
4. Step 4: Simplify right side
   2,117.34x = 3,937,230.69
5. Step 5: Solve for x
   x = 3,937,230.69/2,117.34
6. Step 6: Final answer
   x = 1,859.52