Finding the Fourth Proportional to 1,241.07, 1,870.32 and 1,117.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,241.07 : 1,870.32 = 1,117.82 : x
2. Step 2: Convert to fraction form
   1,241.07/1,870.32 = 1,117.82/x
3. Step 3: Cross multiply
   1,241.07x = 1,870.32 × 1,117.82
4. Step 4: Simplify right side
   1,241.07x = 2,090,686.31
5. Step 5: Solve for x
   x = 2,090,686.31/1,241.07
6. Step 6: Final answer
   x = 1,684.59