Finding the Fourth Proportional to 2,176.55, 3,003.78 and 1,292.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.55 : 3,003.78 = 1,292.30 : x
2. Step 2: Convert to fraction form
   2,176.55/3,003.78 = 1,292.30/x
3. Step 3: Cross multiply
   2,176.55x = 3,003.78 × 1,292.30
4. Step 4: Simplify right side
   2,176.55x = 3,881,784.89
5. Step 5: Solve for x
   x = 3,881,784.89/2,176.55
6. Step 6: Final answer
   x = 1,783.46