Finding the Fourth Proportional to 2,290.94, 3,160.50 and 1,347.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.94 : 3,160.50 = 1,347.02 : x
2. Step 2: Convert to fraction form
   2,290.94/3,160.50 = 1,347.02/x
3. Step 3: Cross multiply
   2,290.94x = 3,160.50 × 1,347.02
4. Step 4: Simplify right side
   2,290.94x = 4,257,256.71
5. Step 5: Solve for x
   x = 4,257,256.71/2,290.94
6. Step 6: Final answer
   x = 1,858.30