Finding the Fourth Proportional to 3,870.70, 5,803.89 and 1,273.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.70 : 5,803.89 = 1,273.42 : x
2. Step 2: Convert to fraction form
   3,870.70/5,803.89 = 1,273.42/x
3. Step 3: Cross multiply
   3,870.70x = 5,803.89 × 1,273.42
4. Step 4: Simplify right side
   3,870.70x = 7,390,789.60
5. Step 5: Solve for x
   x = 7,390,789.60/3,870.70
6. Step 6: Final answer
   x = 1,909.42