Finding the Fourth Proportional to 1,426.51, 2,137.64 and 1,116.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.51 : 2,137.64 = 1,116.99 : x
2. Step 2: Convert to fraction form
   1,426.51/2,137.64 = 1,116.99/x
3. Step 3: Cross multiply
   1,426.51x = 2,137.64 × 1,116.99
4. Step 4: Simplify right side
   1,426.51x = 2,387,723.20
5. Step 5: Solve for x
   x = 2,387,723.20/1,426.51
6. Step 6: Final answer
   x = 1,673.82