Finding the Fourth Proportional to 1,532.39, 2,114.71 and 902.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,532.39 : 2,114.71 = 902.79 : x
2. Step 2: Convert to fraction form
   1,532.39/2,114.71 = 902.79/x
3. Step 3: Cross multiply
   1,532.39x = 2,114.71 × 902.79
4. Step 4: Simplify right side
   1,532.39x = 1,909,136.78
5. Step 5: Solve for x
   x = 1,909,136.78/1,532.39
6. Step 6: Final answer
   x = 1,245.86