Finding the Fourth Proportional to 1,424.76, 2,136.72 and 500.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.76 : 2,136.72 = 500.15 : x
2. Step 2: Convert to fraction form
   1,424.76/2,136.72 = 500.15/x
3. Step 3: Cross multiply
   1,424.76x = 2,136.72 × 500.15
4. Step 4: Simplify right side
   1,424.76x = 1,068,669.82
5. Step 5: Solve for x
   x = 1,068,669.82/1,424.76
6. Step 6: Final answer
   x = 750.07