Finding the Fourth Proportional to 2,117.34, 2,920.34 and 1,370.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.34 : 2,920.34 = 1,370.72 : x
2. Step 2: Convert to fraction form
   2,117.34/2,920.34 = 1,370.72/x
3. Step 3: Cross multiply
   2,117.34x = 2,920.34 × 1,370.72
4. Step 4: Simplify right side
   2,117.34x = 4,002,968.44
5. Step 5: Solve for x
   x = 4,002,968.44/2,117.34
6. Step 6: Final answer
   x = 1,890.56