Finding the Fourth Proportional to 1,426.60, 2,132.69 and 1,412.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.60 : 2,132.69 = 1,412.20 : x
2. Step 2: Convert to fraction form
   1,426.60/2,132.69 = 1,412.20/x
3. Step 3: Cross multiply
   1,426.60x = 2,132.69 × 1,412.20
4. Step 4: Simplify right side
   1,426.60x = 3,011,784.82
5. Step 5: Solve for x
   x = 3,011,784.82/1,426.60
6. Step 6: Final answer
   x = 2,111.16