Finding the Fourth Proportional to 1,576.52, 2,175.56 and 987.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,576.52 : 2,175.56 = 987.38 : x
2. Step 2: Convert to fraction form
   1,576.52/2,175.56 = 987.38/x
3. Step 3: Cross multiply
   1,576.52x = 2,175.56 × 987.38
4. Step 4: Simplify right side
   1,576.52x = 2,148,104.43
5. Step 5: Solve for x
   x = 2,148,104.43/1,576.52
6. Step 6: Final answer
   x = 1,362.56