Finding the Fourth Proportional to 3,870.76, 5,804.70 and 1,273

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.76 : 5,804.70 = 1,273 : x
2. Step 2: Convert to fraction form
   3,870.76/5,804.70 = 1,273/x
3. Step 3: Cross multiply
   3,870.76x = 5,804.70 × 1,273
4. Step 4: Simplify right side
   3,870.76x = 7,389,383.10
5. Step 5: Solve for x
   x = 7,389,383.10/3,870.76
6. Step 6: Final answer
   x = 1,909.03