Finding the Fourth Proportional to 2,488.72, 3,730.56 and 1,188.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.72 : 3,730.56 = 1,188.76 : x
2. Step 2: Convert to fraction form
   2,488.72/3,730.56 = 1,188.76/x
3. Step 3: Cross multiply
   2,488.72x = 3,730.56 × 1,188.76
4. Step 4: Simplify right side
   2,488.72x = 4,434,740.51
5. Step 5: Solve for x
   x = 4,434,740.51/2,488.72
6. Step 6: Final answer
   x = 1,781.94