Finding the Fourth Proportional to 3,687.30, 5,530.07 and 1,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.30 : 5,530.07 = 1,054.72 : x
2. Step 2: Convert to fraction form
   3,687.30/5,530.07 = 1,054.72/x
3. Step 3: Cross multiply
   3,687.30x = 5,530.07 × 1,054.72
4. Step 4: Simplify right side
   3,687.30x = 5,832,684.98
5. Step 5: Solve for x
   x = 5,832,684.98/3,687.30
6. Step 6: Final answer
   x = 1,581.83