Finding the Fourth Proportional to 2,151.76, 2,967.80 and 1,489.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.76 : 2,967.80 = 1,489.72 : x
2. Step 2: Convert to fraction form
   2,151.76/2,967.80 = 1,489.72/x
3. Step 3: Cross multiply
   2,151.76x = 2,967.80 × 1,489.72
4. Step 4: Simplify right side
   2,151.76x = 4,421,191.02
5. Step 5: Solve for x
   x = 4,421,191.02/2,151.76
6. Step 6: Final answer
   x = 2,054.69