Finding the Fourth Proportional to 2,123.48, 2,930.40 and 1,191.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.48 : 2,930.40 = 1,191.98 : x
2. Step 2: Convert to fraction form
   2,123.48/2,930.40 = 1,191.98/x
3. Step 3: Cross multiply
   2,123.48x = 2,930.40 × 1,191.98
4. Step 4: Simplify right side
   2,123.48x = 3,492,978.19
5. Step 5: Solve for x
   x = 3,492,978.19/2,123.48
6. Step 6: Final answer
   x = 1,644.93