Finding the Fourth Proportional to 2,213.81, 3,056.15 and 1,715.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.81 : 3,056.15 = 1,715.32 : x
2. Step 2: Convert to fraction form
   2,213.81/3,056.15 = 1,715.32/x
3. Step 3: Cross multiply
   2,213.81x = 3,056.15 × 1,715.32
4. Step 4: Simplify right side
   2,213.81x = 5,242,271.87
5. Step 5: Solve for x
   x = 5,242,271.87/2,213.81
6. Step 6: Final answer
   x = 2,367.99