Finding the Fourth Proportional to 1,435.59, 2,151.56 and 1,406.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.59 : 2,151.56 = 1,406.43 : x
2. Step 2: Convert to fraction form
   1,435.59/2,151.56 = 1,406.43/x
3. Step 3: Cross multiply
   1,435.59x = 2,151.56 × 1,406.43
4. Step 4: Simplify right side
   1,435.59x = 3,026,022.05
5. Step 5: Solve for x
   x = 3,026,022.05/1,435.59
6. Step 6: Final answer
   x = 2,107.86