Finding the Fourth Proportional to 1,087.74, 1,501.52 and 738.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.74 : 1,501.52 = 738.63 : x
2. Step 2: Convert to fraction form
   1,087.74/1,501.52 = 738.63/x
3. Step 3: Cross multiply
   1,087.74x = 1,501.52 × 738.63
4. Step 4: Simplify right side
   1,087.74x = 1,109,064.02
5. Step 5: Solve for x
   x = 1,109,064.02/1,087.74
6. Step 6: Final answer
   x = 1,019.60