Finding the Fourth Proportional to 1,667.30, 2,301.56 and 1,129.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.30 : 2,301.56 = 1,129.05 : x
2. Step 2: Convert to fraction form
   1,667.30/2,301.56 = 1,129.05/x
3. Step 3: Cross multiply
   1,667.30x = 2,301.56 × 1,129.05
4. Step 4: Simplify right side
   1,667.30x = 2,598,570.67
5. Step 5: Solve for x
   x = 2,598,570.67/1,667.30
6. Step 6: Final answer
   x = 1,558.55