Finding the Fourth Proportional to 1,429.84, 2,128.82 and 1,412.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.84 : 2,128.82 = 1,412.56 : x
2. Step 2: Convert to fraction form
   1,429.84/2,128.82 = 1,412.56/x
3. Step 3: Cross multiply
   1,429.84x = 2,128.82 × 1,412.56
4. Step 4: Simplify right side
   1,429.84x = 3,007,085.98
5. Step 5: Solve for x
   x = 3,007,085.98/1,429.84
6. Step 6: Final answer
   x = 2,103.09