Finding the Fourth Proportional to 1,144,388.94, 1,578,763.35 and 691,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144,388.94 : 1,578,763.35 = 691,417.50 : x
2. Step 2: Convert to fraction form
   1,144,388.94/1,578,763.35 = 691,417.50/x
3. Step 3: Cross multiply
   1,144,388.94x = 1,578,763.35 × 691,417.50
4. Step 4: Simplify right side
   1,144,388.94x = 1,091,584,608,548.63
5. Step 5: Solve for x
   x = 1,091,584,608,548.63/1,144,388.94
6. Step 6: Final answer
   x = 953,858.06