Finding the Fourth Proportional to 1,895.89, 2,842.47 and 1,278.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,895.89 : 2,842.47 = 1,278.07 : x
2. Step 2: Convert to fraction form
   1,895.89/2,842.47 = 1,278.07/x
3. Step 3: Cross multiply
   1,895.89x = 2,842.47 × 1,278.07
4. Step 4: Simplify right side
   1,895.89x = 3,632,875.63
5. Step 5: Solve for x
   x = 3,632,875.63/1,895.89
6. Step 6: Final answer
   x = 1,916.18