Finding the Fourth Proportional to 1,251.48, 1,877.49 and 521.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.48 : 1,877.49 = 521.27 : x
2. Step 2: Convert to fraction form
   1,251.48/1,877.49 = 521.27/x
3. Step 3: Cross multiply
   1,251.48x = 1,877.49 × 521.27
4. Step 4: Simplify right side
   1,251.48x = 978,669.82
5. Step 5: Solve for x
   x = 978,669.82/1,251.48
6. Step 6: Final answer
   x = 782.01