Finding the Fourth Proportional to 2,184.78, 3,012.63 and 1,902.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,184.78 : 3,012.63 = 1,902.51 : x
2. Step 2: Convert to fraction form
   2,184.78/3,012.63 = 1,902.51/x
3. Step 3: Cross multiply
   2,184.78x = 3,012.63 × 1,902.51
4. Step 4: Simplify right side
   2,184.78x = 5,731,558.70
5. Step 5: Solve for x
   x = 5,731,558.70/2,184.78
6. Step 6: Final answer
   x = 2,623.40