Finding the Fourth Proportional to 1,407.87, 1,943.01 and 848.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.87 : 1,943.01 = 848.61 : x
2. Step 2: Convert to fraction form
   1,407.87/1,943.01 = 848.61/x
3. Step 3: Cross multiply
   1,407.87x = 1,943.01 × 848.61
4. Step 4: Simplify right side
   1,407.87x = 1,648,857.72
5. Step 5: Solve for x
   x = 1,648,857.72/1,407.87
6. Step 6: Final answer
   x = 1,171.17