Finding the Fourth Proportional to 3,915.95, 5,874.53 and 1,142.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.95 : 5,874.53 = 1,142.30 : x
2. Step 2: Convert to fraction form
   3,915.95/5,874.53 = 1,142.30/x
3. Step 3: Cross multiply
   3,915.95x = 5,874.53 × 1,142.30
4. Step 4: Simplify right side
   3,915.95x = 6,710,484.59
5. Step 5: Solve for x
   x = 6,710,484.59/3,915.95
6. Step 6: Final answer
   x = 1,713.63