Finding the Fourth Proportional to 1,816.56, 2,725.38 and 1,406.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.56 : 2,725.38 = 1,406.16 : x
2. Step 2: Convert to fraction form
   1,816.56/2,725.38 = 1,406.16/x
3. Step 3: Cross multiply
   1,816.56x = 2,725.38 × 1,406.16
4. Step 4: Simplify right side
   1,816.56x = 3,832,320.34
5. Step 5: Solve for x
   x = 3,832,320.34/1,816.56
6. Step 6: Final answer
   x = 2,109.66