Finding the Fourth Proportional to 2,085.70, 3,124.35 and 1,303.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.70 : 3,124.35 = 1,303.30 : x
2. Step 2: Convert to fraction form
   2,085.70/3,124.35 = 1,303.30/x
3. Step 3: Cross multiply
   2,085.70x = 3,124.35 × 1,303.30
4. Step 4: Simplify right side
   2,085.70x = 4,071,965.36
5. Step 5: Solve for x
   x = 4,071,965.36/2,085.70
6. Step 6: Final answer
   x = 1,952.33