Finding the Fourth Proportional to 2,781.30, 4,173.57 and 1,137.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.30 : 4,173.57 = 1,137.69 : x
2. Step 2: Convert to fraction form
   2,781.30/4,173.57 = 1,137.69/x
3. Step 3: Cross multiply
   2,781.30x = 4,173.57 × 1,137.69
4. Step 4: Simplify right side
   2,781.30x = 4,748,228.85
5. Step 5: Solve for x
   x = 4,748,228.85/2,781.30
6. Step 6: Final answer
   x = 1,707.20