Finding the Fourth Proportional to 2,784.61, 4,178.74 and 1,053.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.61 : 4,178.74 = 1,053.24 : x
2. Step 2: Convert to fraction form
   2,784.61/4,178.74 = 1,053.24/x
3. Step 3: Cross multiply
   2,784.61x = 4,178.74 × 1,053.24
4. Step 4: Simplify right side
   2,784.61x = 4,401,189.96
5. Step 5: Solve for x
   x = 4,401,189.96/2,784.61
6. Step 6: Final answer
   x = 1,580.54