Finding the Fourth Proportional to 1,426.51, 2,139.92 and 882.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.51 : 2,139.92 = 882.50 : x
2. Step 2: Convert to fraction form
   1,426.51/2,139.92 = 882.50/x
3. Step 3: Cross multiply
   1,426.51x = 2,139.92 × 882.50
4. Step 4: Simplify right side
   1,426.51x = 1,888,467.60
5. Step 5: Solve for x
   x = 1,888,467.60/1,426.51
6. Step 6: Final answer
   x = 1,323.84