Finding the Fourth Proportional to 3,419.70, 5,123.61 and 1,773.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,419.70 : 5,123.61 = 1,773.78 : x
2. Step 2: Convert to fraction form
   3,419.70/5,123.61 = 1,773.78/x
3. Step 3: Cross multiply
   3,419.70x = 5,123.61 × 1,773.78
4. Step 4: Simplify right side
   3,419.70x = 9,088,156.95
5. Step 5: Solve for x
   x = 9,088,156.95/3,419.70
6. Step 6: Final answer
   x = 2,657.59