Finding the Fourth Proportional to 2,118.72, 2,920.74 and 1,487.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.72 : 2,920.74 = 1,487.34 : x
2. Step 2: Convert to fraction form
   2,118.72/2,920.74 = 1,487.34/x
3. Step 3: Cross multiply
   2,118.72x = 2,920.74 × 1,487.34
4. Step 4: Simplify right side
   2,118.72x = 4,344,133.43
5. Step 5: Solve for x
   x = 4,344,133.43/2,118.72
6. Step 6: Final answer
   x = 2,050.36