Finding the Fourth Proportional to 2,051.84, 2,820.59 and 1,767.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.84 : 2,820.59 = 1,767.20 : x
2. Step 2: Convert to fraction form
   2,051.84/2,820.59 = 1,767.20/x
3. Step 3: Cross multiply
   2,051.84x = 2,820.59 × 1,767.20
4. Step 4: Simplify right side
   2,051.84x = 4,984,546.65
5. Step 5: Solve for x
   x = 4,984,546.65/2,051.84
6. Step 6: Final answer
   x = 2,429.31