Finding the Fourth Proportional to 1,816.76, 2,490.80 and 1,783.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.76 : 2,490.80 = 1,783.96 : x
2. Step 2: Convert to fraction form
   1,816.76/2,490.80 = 1,783.96/x
3. Step 3: Cross multiply
   1,816.76x = 2,490.80 × 1,783.96
4. Step 4: Simplify right side
   1,816.76x = 4,443,472.42
5. Step 5: Solve for x
   x = 4,443,472.42/1,816.76
6. Step 6: Final answer
   x = 2,445.82