Finding the Fourth Proportional to 2,077.05, 3,117.40 and 1,153.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.05 : 3,117.40 = 1,153.65 : x
2. Step 2: Convert to fraction form
   2,077.05/3,117.40 = 1,153.65/x
3. Step 3: Cross multiply
   2,077.05x = 3,117.40 × 1,153.65
4. Step 4: Simplify right side
   2,077.05x = 3,596,388.51
5. Step 5: Solve for x
   x = 3,596,388.51/2,077.05
6. Step 6: Final answer
   x = 1,731.49