Finding the Fourth Proportional to 1,929.39, 2,877.15 and 1,911.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.39 : 2,877.15 = 1,911.86 : x
2. Step 2: Convert to fraction form
   1,929.39/2,877.15 = 1,911.86/x
3. Step 3: Cross multiply
   1,929.39x = 2,877.15 × 1,911.86
4. Step 4: Simplify right side
   1,929.39x = 5,500,693.61
5. Step 5: Solve for x
   x = 5,500,693.61/1,929.39
6. Step 6: Final answer
   x = 2,851.00