Finding the Fourth Proportional to 1,335.01, 1,842.72 and 775.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.01 : 1,842.72 = 775.63 : x
2. Step 2: Convert to fraction form
   1,335.01/1,842.72 = 775.63/x
3. Step 3: Cross multiply
   1,335.01x = 1,842.72 × 775.63
4. Step 4: Simplify right side
   1,335.01x = 1,429,268.91
5. Step 5: Solve for x
   x = 1,429,268.91/1,335.01
6. Step 6: Final answer
   x = 1,070.61