Finding the Fourth Proportional to 2,290.02, 3,160.83 and 1,345.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.02 : 3,160.83 = 1,345.95 : x
2. Step 2: Convert to fraction form
   2,290.02/3,160.83 = 1,345.95/x
3. Step 3: Cross multiply
   2,290.02x = 3,160.83 × 1,345.95
4. Step 4: Simplify right side
   2,290.02x = 4,254,319.14
5. Step 5: Solve for x
   x = 4,254,319.14/2,290.02
6. Step 6: Final answer
   x = 1,857.77