Finding the Fourth Proportional to 1,650.84, 2,280.10 and 1,315.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.84 : 2,280.10 = 1,315.86 : x
2. Step 2: Convert to fraction form
   1,650.84/2,280.10 = 1,315.86/x
3. Step 3: Cross multiply
   1,650.84x = 2,280.10 × 1,315.86
4. Step 4: Simplify right side
   1,650.84x = 3,000,292.39
5. Step 5: Solve for x
   x = 3,000,292.39/1,650.84
6. Step 6: Final answer
   x = 1,817.43