Finding the Fourth Proportional to 2,530.74, 3,796.89 and 887.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.74 : 3,796.89 = 887.31 : x
2. Step 2: Convert to fraction form
   2,530.74/3,796.89 = 887.31/x
3. Step 3: Cross multiply
   2,530.74x = 3,796.89 × 887.31
4. Step 4: Simplify right side
   2,530.74x = 3,369,018.47
5. Step 5: Solve for x
   x = 3,369,018.47/2,530.74
6. Step 6: Final answer
   x = 1,331.24