Finding the Fourth Proportional to 1,422.65, 2,131.34 and 983.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.65 : 2,131.34 = 983.39 : x
2. Step 2: Convert to fraction form
   1,422.65/2,131.34 = 983.39/x
3. Step 3: Cross multiply
   1,422.65x = 2,131.34 × 983.39
4. Step 4: Simplify right side
   1,422.65x = 2,095,922.87
5. Step 5: Solve for x
   x = 2,095,922.87/1,422.65
6. Step 6: Final answer
   x = 1,473.26