Finding the Fourth Proportional to 1,773.55, 2,447.49 and 987.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.55 : 2,447.49 = 987.58 : x
2. Step 2: Convert to fraction form
   1,773.55/2,447.49 = 987.58/x
3. Step 3: Cross multiply
   1,773.55x = 2,447.49 × 987.58
4. Step 4: Simplify right side
   1,773.55x = 2,417,092.17
5. Step 5: Solve for x
   x = 2,417,092.17/1,773.55
6. Step 6: Final answer
   x = 1,362.86