Finding the Fourth Proportional to 2,073.86, 3,109.27 and 977.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.86 : 3,109.27 = 977.61 : x
2. Step 2: Convert to fraction form
   2,073.86/3,109.27 = 977.61/x
3. Step 3: Cross multiply
   2,073.86x = 3,109.27 × 977.61
4. Step 4: Simplify right side
   2,073.86x = 3,039,653.44
5. Step 5: Solve for x
   x = 3,039,653.44/2,073.86
6. Step 6: Final answer
   x = 1,465.70