Finding the Fourth Proportional to 2,492.88, 3,721.74 and 1,904.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,492.88 : 3,721.74 = 1,904.78 : x
2. Step 2: Convert to fraction form
   2,492.88/3,721.74 = 1,904.78/x
3. Step 3: Cross multiply
   2,492.88x = 3,721.74 × 1,904.78
4. Step 4: Simplify right side
   2,492.88x = 7,089,077.31
5. Step 5: Solve for x
   x = 7,089,077.31/2,492.88
6. Step 6: Final answer
   x = 2,843.73