Finding the Fourth Proportional to 2,490.86, 3,736.64 and 846.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.86 : 3,736.64 = 846.96 : x
2. Step 2: Convert to fraction form
   2,490.86/3,736.64 = 846.96/x
3. Step 3: Cross multiply
   2,490.86x = 3,736.64 × 846.96
4. Step 4: Simplify right side
   2,490.86x = 3,164,784.61
5. Step 5: Solve for x
   x = 3,164,784.61/2,490.86
6. Step 6: Final answer
   x = 1,270.56