Finding the Fourth Proportional to 1,410.87, 1,946.71 and 886.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.87 : 1,946.71 = 886.60 : x
2. Step 2: Convert to fraction form
   1,410.87/1,946.71 = 886.60/x
3. Step 3: Cross multiply
   1,410.87x = 1,946.71 × 886.60
4. Step 4: Simplify right side
   1,410.87x = 1,725,946.00
5. Step 5: Solve for x
   x = 1,725,946.00/1,410.87
6. Step 6: Final answer
   x = 1,223.32