Finding the Fourth Proportional to 837,641.72, 1,155,944.68 and 455,667.60

Step by Step Solution

1. Step 1: Write the proportion equation
   837,641.72 : 1,155,944.68 = 455,667.60 : x
2. Step 2: Convert to fraction form
   837,641.72/1,155,944.68 = 455,667.60/x
3. Step 3: Cross multiply
   837,641.72x = 1,155,944.68 × 455,667.60
4. Step 4: Simplify right side
   837,641.72x = 526,726,538,068.37
5. Step 5: Solve for x
   x = 526,726,538,068.37/837,641.72
6. Step 6: Final answer
   x = 628,820.80