Finding the Fourth Proportional to 2,156.60, 2,972.73 and 1,803.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.60 : 2,972.73 = 1,803.69 : x
2. Step 2: Convert to fraction form
   2,156.60/2,972.73 = 1,803.69/x
3. Step 3: Cross multiply
   2,156.60x = 2,972.73 × 1,803.69
4. Step 4: Simplify right side
   2,156.60x = 5,361,883.37
5. Step 5: Solve for x
   x = 5,361,883.37/2,156.60
6. Step 6: Final answer
   x = 2,486.27