Finding the Fourth Proportional to 2,085.34, 3,126.42 and 1,263.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.34 : 3,126.42 = 1,263.39 : x
2. Step 2: Convert to fraction form
   2,085.34/3,126.42 = 1,263.39/x
3. Step 3: Cross multiply
   2,085.34x = 3,126.42 × 1,263.39
4. Step 4: Simplify right side
   2,085.34x = 3,949,887.76
5. Step 5: Solve for x
   x = 3,949,887.76/2,085.34
6. Step 6: Final answer
   x = 1,894.12