Finding the Fourth Proportional to 3,870.32, 5,804.52 and 1,272.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.32 : 5,804.52 = 1,272.56 : x
2. Step 2: Convert to fraction form
   3,870.32/5,804.52 = 1,272.56/x
3. Step 3: Cross multiply
   3,870.32x = 5,804.52 × 1,272.56
4. Step 4: Simplify right side
   3,870.32x = 7,386,599.97
5. Step 5: Solve for x
   x = 7,386,599.97/3,870.32
6. Step 6: Final answer
   x = 1,908.52