Finding the Fourth Proportional to 2,445.17, 3,667.50 and 690.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.17 : 3,667.50 = 690.13 : x
2. Step 2: Convert to fraction form
   2,445.17/3,667.50 = 690.13/x
3. Step 3: Cross multiply
   2,445.17x = 3,667.50 × 690.13
4. Step 4: Simplify right side
   2,445.17x = 2,531,051.78
5. Step 5: Solve for x
   x = 2,531,051.78/2,445.17
6. Step 6: Final answer
   x = 1,035.12