Finding the Fourth Proportional to 2,145.60, 2,963.52 and 2,077.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.60 : 2,963.52 = 2,077.56 : x
2. Step 2: Convert to fraction form
   2,145.60/2,963.52 = 2,077.56/x
3. Step 3: Cross multiply
   2,145.60x = 2,963.52 × 2,077.56
4. Step 4: Simplify right side
   2,145.60x = 6,156,890.61
5. Step 5: Solve for x
   x = 6,156,890.61/2,145.60
6. Step 6: Final answer
   x = 2,869.54