Finding the Fourth Proportional to 2,042.76, 3,065.50 and 1,312.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.76 : 3,065.50 = 1,312.86 : x
2. Step 2: Convert to fraction form
   2,042.76/3,065.50 = 1,312.86/x
3. Step 3: Cross multiply
   2,042.76x = 3,065.50 × 1,312.86
4. Step 4: Simplify right side
   2,042.76x = 4,024,572.33
5. Step 5: Solve for x
   x = 4,024,572.33/2,042.76
6. Step 6: Final answer
   x = 1,970.16