Finding the Fourth Proportional to 2,298.90, 3,172.71 and 1,354.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.90 : 3,172.71 = 1,354.98 : x
2. Step 2: Convert to fraction form
   2,298.90/3,172.71 = 1,354.98/x
3. Step 3: Cross multiply
   2,298.90x = 3,172.71 × 1,354.98
4. Step 4: Simplify right side
   2,298.90x = 4,298,975.57
5. Step 5: Solve for x
   x = 4,298,975.57/2,298.90
6. Step 6: Final answer
   x = 1,870.01