Finding the Fourth Proportional to 1,357.56, 1,870.11 and 983.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.56 : 1,870.11 = 983.43 : x
2. Step 2: Convert to fraction form
   1,357.56/1,870.11 = 983.43/x
3. Step 3: Cross multiply
   1,357.56x = 1,870.11 × 983.43
4. Step 4: Simplify right side
   1,357.56x = 1,839,122.28
5. Step 5: Solve for x
   x = 1,839,122.28/1,357.56
6. Step 6: Final answer
   x = 1,354.73