Finding the Fourth Proportional to 1,574.31, 2,171.82 and 983.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.31 : 2,171.82 = 983.82 : x
2. Step 2: Convert to fraction form
   1,574.31/2,171.82 = 983.82/x
3. Step 3: Cross multiply
   1,574.31x = 2,171.82 × 983.82
4. Step 4: Simplify right side
   1,574.31x = 2,136,679.95
5. Step 5: Solve for x
   x = 2,136,679.95/1,574.31
6. Step 6: Final answer
   x = 1,357.22