Finding the Fourth Proportional to 2,103.71, 3,152.10 and 1,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.71 : 3,152.10 = 1,279.50 : x
2. Step 2: Convert to fraction form
   2,103.71/3,152.10 = 1,279.50/x
3. Step 3: Cross multiply
   2,103.71x = 3,152.10 × 1,279.50
4. Step 4: Simplify right side
   2,103.71x = 4,033,111.95
5. Step 5: Solve for x
   x = 4,033,111.95/2,103.71
6. Step 6: Final answer
   x = 1,917.15