Finding the Fourth Proportional to 3,897.20, 5,848.59 and 1,555.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.20 : 5,848.59 = 1,555.85 : x
2. Step 2: Convert to fraction form
   3,897.20/5,848.59 = 1,555.85/x
3. Step 3: Cross multiply
   3,897.20x = 5,848.59 × 1,555.85
4. Step 4: Simplify right side
   3,897.20x = 9,099,499.51
5. Step 5: Solve for x
   x = 9,099,499.51/3,897.20
6. Step 6: Final answer
   x = 2,334.88