Finding the Fourth Proportional to 2,221.76, 3,064.72 and 1,513.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.76 : 3,064.72 = 1,513.52 : x
2. Step 2: Convert to fraction form
   2,221.76/3,064.72 = 1,513.52/x
3. Step 3: Cross multiply
   2,221.76x = 3,064.72 × 1,513.52
4. Step 4: Simplify right side
   2,221.76x = 4,638,515.01
5. Step 5: Solve for x
   x = 4,638,515.01/2,221.76
6. Step 6: Final answer
   x = 2,087.77