Finding the Fourth Proportional to 1,059.74, 1,588.56 and 503.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.74 : 1,588.56 = 503.47 : x
2. Step 2: Convert to fraction form
   1,059.74/1,588.56 = 503.47/x
3. Step 3: Cross multiply
   1,059.74x = 1,588.56 × 503.47
4. Step 4: Simplify right side
   1,059.74x = 799,794.39
5. Step 5: Solve for x
   x = 799,794.39/1,059.74
6. Step 6: Final answer
   x = 754.71