Finding the Fourth Proportional to 2,490.84, 3,437.34 and 1,371.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.84 : 3,437.34 = 1,371.72 : x
2. Step 2: Convert to fraction form
   2,490.84/3,437.34 = 1,371.72/x
3. Step 3: Cross multiply
   2,490.84x = 3,437.34 × 1,371.72
4. Step 4: Simplify right side
   2,490.84x = 4,715,068.02
5. Step 5: Solve for x
   x = 4,715,068.02/2,490.84
6. Step 6: Final answer
   x = 1,892.96