Finding the Fourth Proportional to 1,666.61, 2,298.88 and 1,045.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.61 : 2,298.88 = 1,045.97 : x
2. Step 2: Convert to fraction form
   1,666.61/2,298.88 = 1,045.97/x
3. Step 3: Cross multiply
   1,666.61x = 2,298.88 × 1,045.97
4. Step 4: Simplify right side
   1,666.61x = 2,404,559.51
5. Step 5: Solve for x
   x = 2,404,559.51/1,666.61
6. Step 6: Final answer
   x = 1,442.78