Finding the Fourth Proportional to 1,665.81, 2,298.58 and 947.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.81 : 2,298.58 = 947.93 : x
2. Step 2: Convert to fraction form
   1,665.81/2,298.58 = 947.93/x
3. Step 3: Cross multiply
   1,665.81x = 2,298.58 × 947.93
4. Step 4: Simplify right side
   1,665.81x = 2,178,879.08
5. Step 5: Solve for x
   x = 2,178,879.08/1,665.81
6. Step 6: Final answer
   x = 1,308.00