Finding the Fourth Proportional to 1,773.89, 2,447.86 and 977.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.89 : 2,447.86 = 977.06 : x
2. Step 2: Convert to fraction form
   1,773.89/2,447.86 = 977.06/x
3. Step 3: Cross multiply
   1,773.89x = 2,447.86 × 977.06
4. Step 4: Simplify right side
   1,773.89x = 2,391,693.85
5. Step 5: Solve for x
   x = 2,391,693.85/1,773.89
6. Step 6: Final answer
   x = 1,348.28