Finding the Fourth Proportional to 2,573.70, 3,861.06 and 930.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.70 : 3,861.06 = 930.06 : x
2. Step 2: Convert to fraction form
   2,573.70/3,861.06 = 930.06/x
3. Step 3: Cross multiply
   2,573.70x = 3,861.06 × 930.06
4. Step 4: Simplify right side
   2,573.70x = 3,591,017.46
5. Step 5: Solve for x
   x = 3,591,017.46/2,573.70
6. Step 6: Final answer
   x = 1,395.27