Finding the Fourth Proportional to 2,290.95, 3,160.50 and 1,347.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.95 : 3,160.50 = 1,347.03 : x
2. Step 2: Convert to fraction form
   2,290.95/3,160.50 = 1,347.03/x
3. Step 3: Cross multiply
   2,290.95x = 3,160.50 × 1,347.03
4. Step 4: Simplify right side
   2,290.95x = 4,257,288.32
5. Step 5: Solve for x
   x = 4,257,288.32/2,290.95
6. Step 6: Final answer
   x = 1,858.31