Finding the Fourth Proportional to 2,123.58, 2,930.40 and 1,377.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.58 : 2,930.40 = 1,377.96 : x
2. Step 2: Convert to fraction form
   2,123.58/2,930.40 = 1,377.96/x
3. Step 3: Cross multiply
   2,123.58x = 2,930.40 × 1,377.96
4. Step 4: Simplify right side
   2,123.58x = 4,037,973.98
5. Step 5: Solve for x
   x = 4,037,973.98/2,123.58
6. Step 6: Final answer
   x = 1,901.49