Finding the Fourth Proportional to 1,772.32, 2,445.76 and 986.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.32 : 2,445.76 = 986.24 : x
2. Step 2: Convert to fraction form
   1,772.32/2,445.76 = 986.24/x
3. Step 3: Cross multiply
   1,772.32x = 2,445.76 × 986.24
4. Step 4: Simplify right side
   1,772.32x = 2,412,106.34
5. Step 5: Solve for x
   x = 2,412,106.34/1,772.32
6. Step 6: Final answer
   x = 1,360.99