Finding the Fourth Proportional to 2,902.86, 4,003.90 and 1,784.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,902.86 : 4,003.90 = 1,784.43 : x
2. Step 2: Convert to fraction form
   2,902.86/4,003.90 = 1,784.43/x
3. Step 3: Cross multiply
   2,902.86x = 4,003.90 × 1,784.43
4. Step 4: Simplify right side
   2,902.86x = 7,144,663.55
5. Step 5: Solve for x
   x = 7,144,663.55/2,902.86
6. Step 6: Final answer
   x = 2,461.25