Finding the Fourth Proportional to 1,507.57, 2,256.54 and 983.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.57 : 2,256.54 = 983.38 : x
2. Step 2: Convert to fraction form
   1,507.57/2,256.54 = 983.38/x
3. Step 3: Cross multiply
   1,507.57x = 2,256.54 × 983.38
4. Step 4: Simplify right side
   1,507.57x = 2,219,036.31
5. Step 5: Solve for x
   x = 2,219,036.31/1,507.57
6. Step 6: Final answer
   x = 1,471.93