Finding the Fourth Proportional to 2,476.91, 3,715.48 and 1,380.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,476.91 : 3,715.48 = 1,380.45 : x
2. Step 2: Convert to fraction form
   2,476.91/3,715.48 = 1,380.45/x
3. Step 3: Cross multiply
   2,476.91x = 3,715.48 × 1,380.45
4. Step 4: Simplify right side
   2,476.91x = 5,129,034.37
5. Step 5: Solve for x
   x = 5,129,034.37/2,476.91
6. Step 6: Final answer
   x = 2,070.74