Finding the Fourth Proportional to 1,666.96, 2,298.74 and 1,312.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.96 : 2,298.74 = 1,312.24 : x
2. Step 2: Convert to fraction form
   1,666.96/2,298.74 = 1,312.24/x
3. Step 3: Cross multiply
   1,666.96x = 2,298.74 × 1,312.24
4. Step 4: Simplify right side
   1,666.96x = 3,016,498.58
5. Step 5: Solve for x
   x = 3,016,498.58/1,666.96
6. Step 6: Final answer
   x = 1,809.58