Finding the Fourth Proportional to 3,870.10, 5,805.06 and 948.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.10 : 5,805.06 = 948.39 : x
2. Step 2: Convert to fraction form
   3,870.10/5,805.06 = 948.39/x
3. Step 3: Cross multiply
   3,870.10x = 5,805.06 × 948.39
4. Step 4: Simplify right side
   3,870.10x = 5,505,460.85
5. Step 5: Solve for x
   x = 5,505,460.85/3,870.10
6. Step 6: Final answer
   x = 1,422.56