Finding the Fourth Proportional to 3,870.64, 5,804.47 and 1,895.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.64 : 5,804.47 = 1,895.05 : x
2. Step 2: Convert to fraction form
   3,870.64/5,804.47 = 1,895.05/x
3. Step 3: Cross multiply
   3,870.64x = 5,804.47 × 1,895.05
4. Step 4: Simplify right side
   3,870.64x = 10,999,760.87
5. Step 5: Solve for x
   x = 10,999,760.87/3,870.64
6. Step 6: Final answer
   x = 2,841.85