Finding the Fourth Proportional to 1,893.86, 2,839.58 and 1,307.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,893.86 : 2,839.58 = 1,307.22 : x
2. Step 2: Convert to fraction form
   1,893.86/2,839.58 = 1,307.22/x
3. Step 3: Cross multiply
   1,893.86x = 2,839.58 × 1,307.22
4. Step 4: Simplify right side
   1,893.86x = 3,711,955.77
5. Step 5: Solve for x
   x = 3,711,955.77/1,893.86
6. Step 6: Final answer
   x = 1,959.99