Finding the Fourth Proportional to 1,435.31, 1,981.77 and 1,120.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.31 : 1,981.77 = 1,120.94 : x
2. Step 2: Convert to fraction form
   1,435.31/1,981.77 = 1,120.94/x
3. Step 3: Cross multiply
   1,435.31x = 1,981.77 × 1,120.94
4. Step 4: Simplify right side
   1,435.31x = 2,221,445.26
5. Step 5: Solve for x
   x = 2,221,445.26/1,435.31
6. Step 6: Final answer
   x = 1,547.71