Finding the Fourth Proportional to 978,076, 1,349,748.53 and 570,459.30

Step by Step Solution

1. Step 1: Write the proportion equation
   978,076 : 1,349,748.53 = 570,459.30 : x
2. Step 2: Convert to fraction form
   978,076/1,349,748.53 = 570,459.30/x
3. Step 3: Cross multiply
   978,076x = 1,349,748.53 × 570,459.30
4. Step 4: Simplify right side
   978,076x = 769,976,601,599.83
5. Step 5: Solve for x
   x = 769,976,601,599.83/978,076
6. Step 6: Final answer
   x = 787,235.96