Finding the Fourth Proportional to 760,914.37, 1,047,671.82 and 645,954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   760,914.37 : 1,047,671.82 = 645,954.72 : x
2. Step 2: Convert to fraction form
   760,914.37/1,047,671.82 = 645,954.72/x
3. Step 3: Cross multiply
   760,914.37x = 1,047,671.82 × 645,954.72
4. Step 4: Simplify right side
   760,914.37x = 676,748,557,139.99
5. Step 5: Solve for x
   x = 676,748,557,139.99/760,914.37
6. Step 6: Final answer
   x = 889,388.59