Finding the Fourth Proportional to 780,667.62, 1,077,307.30 and 441,128.58

Step by Step Solution

1. Step 1: Write the proportion equation
   780,667.62 : 1,077,307.30 = 441,128.58 : x
2. Step 2: Convert to fraction form
   780,667.62/1,077,307.30 = 441,128.58/x
3. Step 3: Cross multiply
   780,667.62x = 1,077,307.30 × 441,128.58
4. Step 4: Simplify right side
   780,667.62x = 475,231,039,472.63
5. Step 5: Solve for x
   x = 475,231,039,472.63/780,667.62
6. Step 6: Final answer
   x = 608,749.52