Finding the Fourth Proportional to 1,907.60, 2,632.50 and 1,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.60 : 2,632.50 = 1,111.12 : x
2. Step 2: Convert to fraction form
   1,907.60/2,632.50 = 1,111.12/x
3. Step 3: Cross multiply
   1,907.60x = 2,632.50 × 1,111.12
4. Step 4: Simplify right side
   1,907.60x = 2,925,010.24
5. Step 5: Solve for x
   x = 2,925,010.24/1,907.60
6. Step 6: Final answer
   x = 1,533.35