Finding the Fourth Proportional to 1,773.76, 2,449.72 and 1,213.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.76 : 2,449.72 = 1,213.24 : x
2. Step 2: Convert to fraction form
   1,773.76/2,449.72 = 1,213.24/x
3. Step 3: Cross multiply
   1,773.76x = 2,449.72 × 1,213.24
4. Step 4: Simplify right side
   1,773.76x = 2,972,098.29
5. Step 5: Solve for x
   x = 2,972,098.29/1,773.76
6. Step 6: Final answer
   x = 1,675.59