Finding the Fourth Proportional to 1,605.95, 2,216.72 and 943.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.95 : 2,216.72 = 943.07 : x
2. Step 2: Convert to fraction form
   1,605.95/2,216.72 = 943.07/x
3. Step 3: Cross multiply
   1,605.95x = 2,216.72 × 943.07
4. Step 4: Simplify right side
   1,605.95x = 2,090,522.13
5. Step 5: Solve for x
   x = 2,090,522.13/1,605.95
6. Step 6: Final answer
   x = 1,301.74