Finding the Fourth Proportional to 2,345.49, 3,533.90 and 2,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.49 : 3,533.90 = 2,123.42 : x
2. Step 2: Convert to fraction form
   2,345.49/3,533.90 = 2,123.42/x
3. Step 3: Cross multiply
   2,345.49x = 3,533.90 × 2,123.42
4. Step 4: Simplify right side
   2,345.49x = 7,503,925.65
5. Step 5: Solve for x
   x = 7,503,925.65/2,345.49
6. Step 6: Final answer
   x = 3,199.30