Finding the Fourth Proportional to 1,412.69, 1,948.60 and 887.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.69 : 1,948.60 = 887.81 : x
2. Step 2: Convert to fraction form
   1,412.69/1,948.60 = 887.81/x
3. Step 3: Cross multiply
   1,412.69x = 1,948.60 × 887.81
4. Step 4: Simplify right side
   1,412.69x = 1,729,986.57
5. Step 5: Solve for x
   x = 1,729,986.57/1,412.69
6. Step 6: Final answer
   x = 1,224.60