Finding the Fourth Proportional to 1,516.12, 2,272.76 and 1,380.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,516.12 : 2,272.76 = 1,380.86 : x
2. Step 2: Convert to fraction form
   1,516.12/2,272.76 = 1,380.86/x
3. Step 3: Cross multiply
   1,516.12x = 2,272.76 × 1,380.86
4. Step 4: Simplify right side
   1,516.12x = 3,138,363.37
5. Step 5: Solve for x
   x = 3,138,363.37/1,516.12
6. Step 6: Final answer
   x = 2,070.00