Finding the Fourth Proportional to 1,317.60, 1,973.52 and 1,100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.60 : 1,973.52 = 1,100.52 : x
2. Step 2: Convert to fraction form
   1,317.60/1,973.52 = 1,100.52/x
3. Step 3: Cross multiply
   1,317.60x = 1,973.52 × 1,100.52
4. Step 4: Simplify right side
   1,317.60x = 2,171,898.23
5. Step 5: Solve for x
   x = 2,171,898.23/1,317.60
6. Step 6: Final answer
   x = 1,648.37