Finding the Fourth Proportional to 3,868.83, 5,803.18 and 947.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.83 : 5,803.18 = 947.13 : x
2. Step 2: Convert to fraction form
   3,868.83/5,803.18 = 947.13/x
3. Step 3: Cross multiply
   3,868.83x = 5,803.18 × 947.13
4. Step 4: Simplify right side
   3,868.83x = 5,496,370.22
5. Step 5: Solve for x
   x = 5,496,370.22/3,868.83
6. Step 6: Final answer
   x = 1,420.68