Finding the Fourth Proportional to 1,426.83, 2,140.98 and 1,080.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.83 : 2,140.98 = 1,080.05 : x
2. Step 2: Convert to fraction form
   1,426.83/2,140.98 = 1,080.05/x
3. Step 3: Cross multiply
   1,426.83x = 2,140.98 × 1,080.05
4. Step 4: Simplify right side
   1,426.83x = 2,312,368.81
5. Step 5: Solve for x
   x = 2,312,368.81/1,426.83
6. Step 6: Final answer
   x = 1,620.63