Finding the Fourth Proportional to 2,213.93, 3,321.81 and 1,240.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.93 : 3,321.81 = 1,240.01 : x
2. Step 2: Convert to fraction form
   2,213.93/3,321.81 = 1,240.01/x
3. Step 3: Cross multiply
   2,213.93x = 3,321.81 × 1,240.01
4. Step 4: Simplify right side
   2,213.93x = 4,119,073.47
5. Step 5: Solve for x
   x = 4,119,073.47/2,213.93
6. Step 6: Final answer
   x = 1,860.52