Finding the Fourth Proportional to 1,773.32, 2,447.30 and 987.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.32 : 2,447.30 = 987.49 : x
2. Step 2: Convert to fraction form
   1,773.32/2,447.30 = 987.49/x
3. Step 3: Cross multiply
   1,773.32x = 2,447.30 × 987.49
4. Step 4: Simplify right side
   1,773.32x = 2,416,667.10
5. Step 5: Solve for x
   x = 2,416,667.10/1,773.32
6. Step 6: Final answer
   x = 1,362.79